एक विद्यार्थी के पास (3) शर्ट और (4) पैंट हैं। वह एक शर्ट और एक पैंट कितने तरीकों से चुन सकता है?
A student has (3) shirts and (4) trousers. In how many ways can one shirt and one trouser be chosen?
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A (7) तरीके / (7) ways
B (12) तरीके / (12) ways
C (9) तरीके / (9) ways
D (24) तरीके / (24) ways
Explanation opens after your attempt
Correct Answer
B. (12) तरीके / (12) ways
Step 1
Concept
Total ways are \(3 \times 4=12\). In exams multiply for independent choices connected by "and".
Step 2
Why this answer is correct
The correct answer is B. (12) तरीके / (12) ways. Total ways are \(3 \times 4=12\). In exams multiply for independent choices connected by "and".
Step 3
Exam Tip
कुल तरीके \(3 \times 4=12\) होंगे। परीक्षा में "और" वाले स्वतंत्र चुनाव में गुणा करें।
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एक भोजनालय में (5) प्रकार की चाय और (3) प्रकार के नाश्ते हैं। एक चाय और एक नाश्ता कितने तरीकों से चुना जा सकता है?
A cafe has (5) types of tea and (3) types of snacks. In how many ways can one tea and one snack be chosen?
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A (8) तरीके / (8) ways
B (10) तरीके / (10) ways
C (15) तरीके / (15) ways
D (20) तरीके / (20) ways
Explanation opens after your attempt
Correct Answer
C. (15) तरीके / (15) ways
Step 1
Concept
For each tea there are (3) snack choices so \(5 \times 3=15\). Multiply the number of choices at each stage.
Step 2
Why this answer is correct
The correct answer is C. (15) तरीके / (15) ways. For each tea there are (3) snack choices so \(5 \times 3=15\). Multiply the number of choices at each stage.
Step 3
Exam Tip
हर चाय के साथ (3) नाश्ते चुने जा सकते हैं इसलिए \(5 \times 3=15\)। ऐसे प्रश्नों में चरणों की संख्या गुणा करें।
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एक कोड में पहला अक्षर (4) तरीकों से और दूसरा अंक (6) तरीकों से चुना जा सकता है। कुल कोड कितने बनेंगे?
In a code the first letter can be chosen in (4) ways and the second digit in (6) ways. How many codes can be formed?
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A (24) कोड / (24) codes
B (10) कोड / (10) codes
C (12) कोड / (12) codes
D (36) कोड / (36) codes
Explanation opens after your attempt
Correct Answer
A. (24) कोड / (24) codes
Step 1
Concept
Total codes are \(4 \times 6=24\). Use the multiplication principle for independent positions.
Step 2
Why this answer is correct
The correct answer is A. (24) कोड / (24) codes. Total codes are \(4 \times 6=24\). Use the multiplication principle for independent positions.
Step 3
Exam Tip
कुल कोड \(4 \times 6=24\) हैं। स्वतंत्र स्थानों के लिए गुणन सिद्धांत लगाएं।
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एक व्यक्ति (2) बस मार्गों और (5) रेल मार्गों में से एक बस मार्ग तथा एक रेल मार्ग चुनता है। कुल चयन कितने हैं?
A person chooses one bus route from (2) routes and one train route from (5) routes. How many total choices are possible?
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A (5) चयन / (5) choices
B (7) चयन / (7) choices
C (20) चयन / (20) choices
D (10) चयन / (10) choices
Explanation opens after your attempt
Correct Answer
D. (10) चयन / (10) choices
Step 1
Concept
Both a bus route and a train route are chosen so \(2 \times 5=10\). The word "both" usually indicates multiplication.
Step 2
Why this answer is correct
The correct answer is D. (10) चयन / (10) choices. Both a bus route and a train route are chosen so \(2 \times 5=10\). The word "both" usually indicates multiplication.
Step 3
Exam Tip
बस और रेल दोनों चुनने हैं इसलिए \(2 \times 5=10\)। "दोनों" का अर्थ आमतौर पर गुणा होता है।
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एक विद्यालय में (6) रंग की टोपी और (2) रंग के रिबन उपलब्ध हैं। एक टोपी और एक रिबन कितने तरीकों से चुने जा सकते हैं?
A school has caps in (6) colors and ribbons in (2) colors. In how many ways can one cap and one ribbon be chosen?
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A (6) तरीके / (6) ways
B (8) तरीके / (8) ways
C (12) तरीके / (12) ways
D (14) तरीके / (14) ways
Explanation opens after your attempt
Correct Answer
C. (12) तरीके / (12) ways
Step 1
Concept
Each cap can pair with (2) ribbons so \(6 \times 2=12\). Remember multiplication principle for making pairs.
Step 2
Why this answer is correct
The correct answer is C. (12) तरीके / (12) ways. Each cap can pair with (2) ribbons so \(6 \times 2=12\). Remember multiplication principle for making pairs.
Step 3
Exam Tip
प्रत्येक टोपी के साथ (2) रिबन मिल सकते हैं इसलिए \(6 \times 2=12\)। जोड़ी बनाने में गुणन सिद्धांत याद रखें।
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एक थाली में (4) सब्जियां और (3) रोटियां विकल्प के रूप में हैं। एक सब्जी और एक रोटी कितने तरीकों से चुनी जा सकती है?
A meal plate offers (4) vegetable dishes and (3) bread options. In how many ways can one vegetable dish and one bread be chosen?
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A (12) तरीके / (12) ways
B (7) तरीके / (7) ways
C (9) तरीके / (9) ways
D (16) तरीके / (16) ways
Explanation opens after your attempt
Correct Answer
A. (12) तरीके / (12) ways
Step 1
Concept
Total ways are \(4 \times 3=12\). Multiply when one item is selected from each different category.
Step 2
Why this answer is correct
The correct answer is A. (12) तरीके / (12) ways. Total ways are \(4 \times 3=12\). Multiply when one item is selected from each different category.
Step 3
Exam Tip
कुल तरीके \(4 \times 3=12\) हैं। अलग-अलग वर्गों से एक-एक वस्तु लेने पर गुणा करें।
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एक उपहार पैक में (3) प्रकार के कागज और (5) प्रकार के फीते हैं। एक कागज और एक फीता चुनने के कितने तरीके हैं?
A gift pack has (3) types of wrapping paper and (5) types of ribbons. How many ways are there to choose one paper and one ribbon?
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A (8) तरीके / (8) ways
B (15) तरीके / (15) ways
C (10) तरीके / (10) ways
D (30) तरीके / (30) ways
Explanation opens after your attempt
Correct Answer
B. (15) तरीके / (15) ways
Step 1
Concept
For each paper there are (5) ribbon choices so \(3 \times 5=15\). Independent choices give the answer by multiplication.
Step 2
Why this answer is correct
The correct answer is B. (15) तरीके / (15) ways. For each paper there are (5) ribbon choices so \(3 \times 5=15\). Independent choices give the answer by multiplication.
Step 3
Exam Tip
प्रत्येक कागज के लिए (5) फीते हैं इसलिए \(3 \times 5=15\)। चुनाव स्वतंत्र हों तो उत्तर गुणन से मिलता है।
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एक छात्र (7) पेन और (2) कॉपियों में से एक पेन और एक कॉपी खरीदता है। कुल खरीद संयोजन कितने हैं?
A student buys one pen from (7) pens and one notebook from (2) notebooks. How many purchase combinations are possible?
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A (9) संयोजन / (9) combinations
B (12) संयोजन / (12) combinations
C (14) संयोजन / (14) combinations
D (16) संयोजन / (16) combinations
Explanation opens after your attempt
Correct Answer
C. (14) संयोजन / (14) combinations
Step 1
Concept
For one pen and one notebook \(7 \times 2=14\). If the question has two stages multiply the choices.
Step 2
Why this answer is correct
The correct answer is C. (14) संयोजन / (14) combinations. For one pen and one notebook \(7 \times 2=14\). If the question has two stages multiply the choices.
Step 3
Exam Tip
एक पेन और एक कॉपी के लिए \(7 \times 2=14\)। प्रश्न में दो चरण हों तो चरणों के तरीके गुणा करें।
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एक मोबाइल में (4) आवरण और (4) स्क्रीन गार्ड उपलब्ध हैं। एक आवरण और एक स्क्रीन गार्ड कितने तरीकों से चुने जा सकते हैं?
A mobile phone has (4) covers and (4) screen guards available. In how many ways can one cover and one screen guard be chosen?
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A (8) तरीके / (8) ways
B (12) तरीके / (12) ways
C (4) तरीके / (4) ways
D (16) तरीके / (16) ways
Explanation opens after your attempt
Correct Answer
D. (16) तरीके / (16) ways
Step 1
Concept
Total ways are \(4 \times 4=16\). Even when the numbers are equal use multiplication not addition.
Step 2
Why this answer is correct
The correct answer is D. (16) तरीके / (16) ways. Total ways are \(4 \times 4=16\). Even when the numbers are equal use multiplication not addition.
Step 3
Exam Tip
कुल तरीके \(4 \times 4=16\) होंगे। समान संख्या होने पर भी जोड़ नहीं बल्कि गुणा करें।
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एक पोशाक में (2) जैकेट विकल्प और (6) जूते विकल्प हैं। एक जैकेट और एक जूते की जोड़ी कितने तरीकों से चुनी जा सकती है?
An outfit has (2) jacket options and (6) shoe options. In how many ways can one jacket and one pair of shoes be chosen?
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A (12) तरीके / (12) ways
B (8) तरीके / (8) ways
C (6) तरीके / (6) ways
D (4) तरीके / (4) ways
Explanation opens after your attempt
Correct Answer
A. (12) तरीके / (12) ways
Step 1
Concept
One jacket and one shoe option are both chosen so \(2 \times 6=12\). Independent choices give total outcomes by multiplication.
Step 2
Why this answer is correct
The correct answer is A. (12) तरीके / (12) ways. One jacket and one shoe option are both chosen so \(2 \times 6=12\). Independent choices give total outcomes by multiplication.
Step 3
Exam Tip
जैकेट और जूते दोनों चुनने हैं इसलिए \(2 \times 6=12\)। स्वतंत्र चुनावों में कुल परिणाम गुणा से मिलते हैं।
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एक प्रश्नपत्र में पहले भाग के (3) प्रश्न और दूसरे भाग के (7) प्रश्न हैं। एक-एक प्रश्न चुनने के कितने तरीके हैं?
A question paper has (3) questions in the first section and (7) questions in the second section. How many ways are there to choose one question from each section?
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A (10) तरीके / (10) ways
B (21) तरीके / (21) ways
C (14) तरीके / (14) ways
D (49) तरीके / (49) ways
Explanation opens after your attempt
Correct Answer
B. (21) तरीके / (21) ways
Step 1
Concept
There are (3) choices from the first section and (7) from the second so \(3 \times 7=21\). Multiply selections from different sections.
Step 2
Why this answer is correct
The correct answer is B. (21) तरीके / (21) ways. There are (3) choices from the first section and (7) from the second so \(3 \times 7=21\). Multiply selections from different sections.
Step 3
Exam Tip
पहले भाग से (3) और दूसरे से (7) विकल्प हैं इसलिए \(3 \times 7=21\)। अलग-अलग भागों से चयन होने पर गुणा करें।
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एक बैग में (5) रंगों की बोतलें और (2) आकारों के डिब्बे हैं। एक बोतल और एक डिब्बा कितने तरीकों से चुना जा सकता है?
A bag has bottles in (5) colors and boxes in (2) sizes. In how many ways can one bottle and one box be chosen?
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A (7) तरीके / (7) ways
B (25) तरीके / (25) ways
C (10) तरीके / (10) ways
D (12) तरीके / (12) ways
Explanation opens after your attempt
Correct Answer
C. (10) तरीके / (10) ways
Step 1
Concept
Total selections are \(5 \times 2=10\). When both objects are required the multiplication principle applies.
Step 2
Why this answer is correct
The correct answer is C. (10) तरीके / (10) ways. Total selections are \(5 \times 2=10\). When both objects are required the multiplication principle applies.
Step 3
Exam Tip
कुल चयन \(5 \times 2=10\) हैं। जब दोनों वस्तुएं चाहिए हों तो गुणन सिद्धांत लागू होता है।
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एक पासवर्ड में पहला स्थान (8) अंकों में से और दूसरा स्थान (3) प्रतीकों में से चुना जाता है। कुल पासवर्ड कितने होंगे?
In a password the first position is chosen from (8) digits and the second from (3) symbols. How many passwords are possible?
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A (11) पासवर्ड / (11) passwords
B (18) पासवर्ड / (18) passwords
C (64) पासवर्ड / (64) passwords
D (24) पासवर्ड / (24) passwords
Explanation opens after your attempt
Correct Answer
D. (24) पासवर्ड / (24) passwords
Step 1
Concept
The two positions are independent so \(8 \times 3=24\). For position-based counting multiply the choices for each position.
Step 2
Why this answer is correct
The correct answer is D. (24) पासवर्ड / (24) passwords. The two positions are independent so \(8 \times 3=24\). For position-based counting multiply the choices for each position.
Step 3
Exam Tip
दो स्थान स्वतंत्र हैं इसलिए \(8 \times 3=24\)। स्थान आधारित गिनती में हर स्थान के विकल्प गुणा करें।
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एक यात्रा में (4) शहरों में से गंतव्य और (5) होटलों में से ठहरने का स्थान चुनना है। कुल योजनाएं कितनी बनेंगी?
For a trip one destination is chosen from (4) cities and one stay from (5) hotels. How many plans can be made?
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A (20) योजनाएं / (20) plans
B (9) योजनाएं / (9) plans
C (16) योजनाएं / (16) plans
D (25) योजनाएं / (25) plans
Explanation opens after your attempt
Correct Answer
A. (20) योजनाएं / (20) plans
Step 1
Concept
The destination can be chosen in (4) ways and the hotel in (5) ways so \(4 \times 5=20\). Multiply for successive independent choices.
Step 2
Why this answer is correct
The correct answer is A. (20) योजनाएं / (20) plans. The destination can be chosen in (4) ways and the hotel in (5) ways so \(4 \times 5=20\). Multiply for successive independent choices.
Step 3
Exam Tip
गंतव्य (4) तरीके से और होटल (5) तरीके से चुना जा सकता है इसलिए \(4 \times 5=20\)। क्रमिक स्वतंत्र चयन में गुणा करें।
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एक मंच कार्यक्रम में (6) गीतों में से एक गीत और (3) नृत्यों में से एक नृत्य चुना जाता है। कुल कार्यक्रम जोड़े कितने हैं?
In a stage program one song is chosen from (6) songs and one dance from (3) dances. How many program pairs are possible?
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A (9) जोड़े / (9) pairs
B (18) जोड़े / (18) pairs
C (12) जोड़े / (12) pairs
D (6) जोड़े / (6) pairs
Explanation opens after your attempt
Correct Answer
B. (18) जोड़े / (18) pairs
Step 1
Concept
The song and dance pair can be made in \(6 \times 3=18\) ways. Multiply choices when forming pairs.
Step 2
Why this answer is correct
The correct answer is B. (18) जोड़े / (18) pairs. The song and dance pair can be made in \(6 \times 3=18\) ways. Multiply choices when forming pairs.
Step 3
Exam Tip
गीत और नृत्य की जोड़ी \(6 \times 3=18\) तरीकों से बनेगी। जोड़ी बनाते समय विकल्पों को गुणा करें।
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एक चित्र के लिए (2) पृष्ठभूमियां और (9) फ्रेम उपलब्ध हैं। एक पृष्ठभूमि और एक फ्रेम चुनने के कितने तरीके हैं?
For a picture (2) backgrounds and (9) frames are available. How many ways are there to choose one background and one frame?
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A (11) तरीके / (11) ways
B (9) तरीके / (9) ways
C (18) तरीके / (18) ways
D (20) तरीके / (20) ways
Explanation opens after your attempt
Correct Answer
C. (18) तरीके / (18) ways
Step 1
Concept
Each background can combine with (9) frames so \(2 \times 9=18\). In such questions total pairs are found by multiplication.
Step 2
Why this answer is correct
The correct answer is C. (18) तरीके / (18) ways. Each background can combine with (9) frames so \(2 \times 9=18\). In such questions total pairs are found by multiplication.
Step 3
Exam Tip
हर पृष्ठभूमि के साथ (9) फ्रेम जुड़ सकते हैं इसलिए \(2 \times 9=18\)। ऐसे प्रश्नों में कुल जोड़ी गुणन से मिलती है।
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एक विद्यालय बैज के लिए (5) आकृतियां और (4) रंग उपलब्ध हैं। एक आकृति और एक रंग कितने तरीकों से चुने जा सकते हैं?
For a school badge (5) shapes and (4) colors are available. In how many ways can one shape and one color be chosen?
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A (9) तरीके / (9) ways
B (16) तरीके / (16) ways
C (25) तरीके / (25) ways
D (20) तरीके / (20) ways
Explanation opens after your attempt
Correct Answer
D. (20) तरीके / (20) ways
Step 1
Concept
Total badge options are \(5 \times 4=20\). Treat every color as possible with each shape.
Step 2
Why this answer is correct
The correct answer is D. (20) तरीके / (20) ways. Total badge options are \(5 \times 4=20\). Treat every color as possible with each shape.
Step 3
Exam Tip
कुल बैज विकल्प \(5 \times 4=20\) हैं। हर आकृति के साथ सभी रंग संभव मानें।
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एक विद्यार्थी (3) विषयों में से एक विषय और (8) समय स्लॉट में से एक स्लॉट चुनता है। कुल चुनाव कितने हैं?
A student chooses one subject from (3) subjects and one slot from (8) time slots. How many total choices are possible?
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A (24) चुनाव / (24) choices
B (11) चुनाव / (11) choices
C (16) चुनाव / (16) choices
D (32) चुनाव / (32) choices
Explanation opens after your attempt
Correct Answer
A. (24) चुनाव / (24) choices
Step 1
Concept
Both subject and time are chosen so \(3 \times 8=24\). Multiplication is correct for independent stages.
Step 2
Why this answer is correct
The correct answer is A. (24) चुनाव / (24) choices. Both subject and time are chosen so \(3 \times 8=24\). Multiplication is correct for independent stages.
Step 3
Exam Tip
विषय और समय दोनों चुनने हैं इसलिए \(3 \times 8=24\)। स्वतंत्र चरणों के लिए गुणा करना सही है।
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एक पुस्तक मेले में (7) उपन्यास और (5) पत्रिकाएं हैं। एक उपन्यास और एक पत्रिका कितने तरीकों से चुनी जा सकती है?
At a book fair there are (7) novels and (5) magazines. In how many ways can one novel and one magazine be chosen?
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A (12) तरीके / (12) ways
B (35) तरीके / (35) ways
C (30) तरीके / (30) ways
D (25) तरीके / (25) ways
Explanation opens after your attempt
Correct Answer
B. (35) तरीके / (35) ways
Step 1
Concept
With each novel (5) magazines can be selected so \(7 \times 5=35\). Multiply when selecting one from each category.
Step 2
Why this answer is correct
The correct answer is B. (35) तरीके / (35) ways. With each novel (5) magazines can be selected so \(7 \times 5=35\). Multiply when selecting one from each category.
Step 3
Exam Tip
हर उपन्यास के साथ (5) पत्रिकाएं चुनी जा सकती हैं इसलिए \(7 \times 5=35\)। अलग श्रेणियों से एक-एक चयन में गुणा करें।
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एक पहचान पत्र में (4) रंग योजनाएं और (6) फॉन्ट शैलियां हैं। एक रंग योजना और एक फॉन्ट शैली कितने तरीकों से चुनी जा सकती है?
An identity card has (4) color schemes and (6) font styles. In how many ways can one color scheme and one font style be chosen?
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A (10) तरीके / (10) ways
B (18) तरीके / (18) ways
C (24) तरीके / (24) ways
D (36) तरीके / (36) ways
Explanation opens after your attempt
Correct Answer
C. (24) तरीके / (24) ways
Step 1
Concept
Total ways are \(4 \times 6=24\). Each first choice combines with all choices of the second.
Step 2
Why this answer is correct
The correct answer is C. (24) तरीके / (24) ways. Total ways are \(4 \times 6=24\). Each first choice combines with all choices of the second.
Step 3
Exam Tip
कुल तरीके \(4 \times 6=24\) होंगे। प्रत्येक पहले विकल्प के साथ दूसरे के सभी विकल्प मिलते हैं।
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एक खेल किट में (2) बल्ले और (7) गेंद विकल्प हैं। एक बल्ला और एक गेंद कितने तरीकों से चुने जा सकते हैं?
A sports kit has (2) bat options and (7) ball options. In how many ways can one bat and one ball be chosen?
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A (7) तरीके / (7) ways
B (9) तरीके / (9) ways
C (12) तरीके / (12) ways
D (14) तरीके / (14) ways
Explanation opens after your attempt
Correct Answer
D. (14) तरीके / (14) ways
Step 1
Concept
The bat is chosen in (2) ways and the ball in (7) ways so \(2 \times 7=14\). Use multiplication for "one and one" choices.
Step 2
Why this answer is correct
The correct answer is D. (14) तरीके / (14) ways. The bat is chosen in (2) ways and the ball in (7) ways so \(2 \times 7=14\). Use multiplication for "one and one" choices.
Step 3
Exam Tip
बल्ला (2) तरीकों से और गेंद (7) तरीकों से चुनी जाती है इसलिए \(2 \times 7=14\)। "एक और एक" में गुणन सिद्धांत लगाएं।
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एक नामपट्टिका में (9) अक्षर शैलियां और (2) सीमा रंग हैं। एक शैली और एक सीमा रंग चुनने के कितने तरीके हैं?
A name plate has (9) letter styles and (2) border colors. How many ways are there to choose one style and one border color?
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A (18) तरीके / (18) ways
B (11) तरीके / (11) ways
C (20) तरीके / (20) ways
D (9) तरीके / (9) ways
Explanation opens after your attempt
Correct Answer
A. (18) तरीके / (18) ways
Step 1
Concept
Total options are \(9 \times 2=18\). Multiply the two independent decoration choices.
Step 2
Why this answer is correct
The correct answer is A. (18) तरीके / (18) ways. Total options are \(9 \times 2=18\). Multiply the two independent decoration choices.
Step 3
Exam Tip
कुल विकल्प \(9 \times 2=18\) हैं। दो स्वतंत्र सजावट विकल्पों को गुणा करें।
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एक अभ्यास ऐप में (5) अध्याय और (6) कठिनाई स्तर हैं। एक अध्याय और एक कठिनाई स्तर कितने तरीकों से चुना जा सकता है?
A practice app has (5) chapters and (6) difficulty levels. In how many ways can one chapter and one difficulty level be chosen?
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A (11) तरीके / (11) ways
B (30) तरीके / (30) ways
C (25) तरीके / (25) ways
D (36) तरीके / (36) ways
Explanation opens after your attempt
Correct Answer
B. (30) तरीके / (30) ways
Step 1
Concept
There are (5) chapters and (6) levels so \(5 \times 6=30\). Independent choices give total outcomes by multiplication.
Step 2
Why this answer is correct
The correct answer is B. (30) तरीके / (30) ways. There are (5) chapters and (6) levels so \(5 \times 6=30\). Independent choices give total outcomes by multiplication.
Step 3
Exam Tip
अध्याय (5) और स्तर (6) हैं इसलिए \(5 \times 6=30\)। स्वतंत्र चयन में कुल परिणाम गुणा से मिलते हैं।
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एक परीक्षा केंद्र में (3) प्रवेश द्वार और (4) बैठने वाले कक्ष हैं। एक द्वार और एक कक्ष चुनने के कितने तरीके हैं?
An exam center has (3) entry gates and (4) seating rooms. How many ways are there to choose one gate and one room?
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A (7) तरीके / (7) ways
B (9) तरीके / (9) ways
C (12) तरीके / (12) ways
D (16) तरीके / (16) ways
Explanation opens after your attempt
Correct Answer
C. (12) तरीके / (12) ways
Step 1
Concept
Both gate and room are fixed so \(3 \times 4=12\). Multiply the choices in each stage.
Step 2
Why this answer is correct
The correct answer is C. (12) तरीके / (12) ways. Both gate and room are fixed so \(3 \times 4=12\). Multiply the choices in each stage.
Step 3
Exam Tip
द्वार और कक्ष दोनों तय होते हैं इसलिए \(3 \times 4=12\)। प्रत्येक चरण के विकल्पों को गुणा करें।
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एक खिलौना गाड़ी (4) रंगों और (3) पहिया डिजाइनों में मिलती है। कुल मॉडल कितने हैं?
A toy car is available in (4) colors and (3) wheel designs. How many total models are there?
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A (7) मॉडल / (7) models
B (9) मॉडल / (9) models
C (16) मॉडल / (16) models
D (12) मॉडल / (12) models
Explanation opens after your attempt
Correct Answer
D. (12) मॉडल / (12) models
Step 1
Concept
Total models are \(4 \times 3=12\). Every color is possible with every design.
Step 2
Why this answer is correct
The correct answer is D. (12) मॉडल / (12) models. Total models are \(4 \times 3=12\). Every color is possible with every design.
Step 3
Exam Tip
कुल मॉडल \(4 \times 3=12\) होंगे। हर रंग के साथ हर डिजाइन संभव है।
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एक वेबसाइट के लिए (6) शीर्षक रंग और (5) बटन आकार हैं। एक रंग और एक आकार कितने तरीकों से चुना जा सकता है?
For a website there are (6) heading colors and (5) button shapes. In how many ways can one color and one shape be chosen?
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A (30) तरीके / (30) ways
B (11) तरीके / (11) ways
C (25) तरीके / (25) ways
D (36) तरीके / (36) ways
Explanation opens after your attempt
Correct Answer
A. (30) तरीके / (30) ways
Step 1
Concept
The color is chosen in (6) ways and the shape in (5) ways so \(6 \times 5=30\). In such combinations multiply instead of adding.
Step 2
Why this answer is correct
The correct answer is A. (30) तरीके / (30) ways. The color is chosen in (6) ways and the shape in (5) ways so \(6 \times 5=30\). In such combinations multiply instead of adding.
Step 3
Exam Tip
रंग (6) तरीकों से और आकार (5) तरीकों से चुना जाता है इसलिए \(6 \times 5=30\)। ऐसे संयोजन में जोड़ की जगह गुणा करें।
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एक कक्षा प्रतिनिधि के लिए (4) लड़के और (5) लड़कियां उपलब्ध हैं। एक लड़का प्रतिनिधि और एक लड़की प्रतिनिधि कितने तरीकों से चुने जा सकते हैं?
For class representatives (4) boys and (5) girls are available. In how many ways can one boy representative and one girl representative be chosen?
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A (9) तरीके / (9) ways
B (20) तरीके / (20) ways
C (16) तरीके / (16) ways
D (25) तरीके / (25) ways
Explanation opens after your attempt
Correct Answer
B. (20) तरीके / (20) ways
Step 1
Concept
One boy and one girl must be chosen so \(4 \times 5=20\). When both positions are filled multiply the choices.
Step 2
Why this answer is correct
The correct answer is B. (20) तरीके / (20) ways. One boy and one girl must be chosen so \(4 \times 5=20\). When both positions are filled multiply the choices.
Step 3
Exam Tip
एक लड़का और एक लड़की चुननी है इसलिए \(4 \times 5=20\)। जब दोनों पद भरने हों तो विकल्प गुणा करें।
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एक फोटो एल्बम में (3) आवरण डिज़ाइन और (9) पृष्ठ रंग हैं। एक डिज़ाइन और एक पृष्ठ रंग कितने तरीकों से चुने जा सकते हैं?
A photo album has (3) cover designs and (9) page colors. In how many ways can one design and one page color be chosen?
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A (12) तरीके / (12) ways
B (18) तरीके / (18) ways
C (27) तरीके / (27) ways
D (30) तरीके / (30) ways
Explanation opens after your attempt
Correct Answer
C. (27) तरीके / (27) ways
Step 1
Concept
For every cover design there are (9) colors so \(3 \times 9=27\). Total options are found by multiplying stages.
Step 2
Why this answer is correct
The correct answer is C. (27) तरीके / (27) ways. For every cover design there are (9) colors so \(3 \times 9=27\). Total options are found by multiplying stages.
Step 3
Exam Tip
हर आवरण डिज़ाइन के लिए (9) रंग हैं इसलिए \(3 \times 9=27\)। कुल विकल्प चरणों के गुणन से मिलते हैं।
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एक मिठाई डिब्बे में (8) मिठाइयों और (2) डिब्बा आकारों में से चुनाव है। एक मिठाई प्रकार और एक आकार कितने तरीकों से चुना जा सकता है?
A sweet box allows choosing from (8) sweet types and (2) box sizes. In how many ways can one sweet type and one size be chosen?
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A (10) तरीके / (10) ways
B (12) तरीके / (12) ways
C (8) तरीके / (8) ways
D (16) तरीके / (16) ways
Explanation opens after your attempt
Correct Answer
D. (16) तरीके / (16) ways
Step 1
Concept
Total ways are \(8 \times 2=16\). Each sweet type is assumed available in two sizes.
Step 2
Why this answer is correct
The correct answer is D. (16) तरीके / (16) ways. Total ways are \(8 \times 2=16\). Each sweet type is assumed available in two sizes.
Step 3
Exam Tip
कुल तरीके \(8 \times 2=16\) हैं। प्रत्येक मिठाई प्रकार दो आकारों में उपलब्ध माना गया है।
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एक विद्यार्थी (6) कलम रंगों और (3) हाईलाइटर रंगों में से एक-एक चुनता है। कुल जोड़े कितने बनेंगे?
A student chooses one from (6) pen colors and one from (3) highlighter colors. How many total pairs are formed?
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A (18) जोड़े / (18) pairs
B (9) जोड़े / (9) pairs
C (12) जोड़े / (12) pairs
D (24) जोड़े / (24) pairs
Explanation opens after your attempt
Correct Answer
A. (18) जोड़े / (18) pairs
Step 1
Concept
Pairs formed are \(6 \times 3=18\). Multiply when one option is selected from each of two groups.
Step 2
Why this answer is correct
The correct answer is A. (18) जोड़े / (18) pairs. Pairs formed are \(6 \times 3=18\). Multiply when one option is selected from each of two groups.
Step 3
Exam Tip
जोड़े \(6 \times 3=18\) बनेंगे। एक-एक विकल्प दो समूहों से हो तो गुणा करें।
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एक स्टेशनरी सेट में (4) फाइल रंग और (7) लेबल रंग हैं। एक फाइल रंग और एक लेबल रंग कितने तरीकों से चुने जा सकते हैं?
A stationery set has (4) file colors and (7) label colors. In how many ways can one file color and one label color be chosen?
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A (11) तरीके / (11) ways
B (28) तरीके / (28) ways
C (21) तरीके / (21) ways
D (32) तरीके / (32) ways
Explanation opens after your attempt
Correct Answer
B. (28) तरीके / (28) ways
Step 1
Concept
There are (4) file colors and (7) label colors so \(4 \times 7=28\). Multiply independent color choices.
Step 2
Why this answer is correct
The correct answer is B. (28) तरीके / (28) ways. There are (4) file colors and (7) label colors so \(4 \times 7=28\). Multiply independent color choices.
Step 3
Exam Tip
फाइल रंग (4) और लेबल रंग (7) हैं इसलिए \(4 \times 7=28\)। स्वतंत्र रंग चुनावों को गुणा करें।
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एक ऑनलाइन कक्षा में (5) शिक्षक और (4) समय विकल्प हैं। एक शिक्षक और एक समय विकल्प कितने तरीकों से चुने जा सकते हैं?
In an online class there are (5) teachers and (4) time options. In how many ways can one teacher and one time option be chosen?
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A (9) तरीके / (9) ways
B (16) तरीके / (16) ways
C (20) तरीके / (20) ways
D (25) तरीके / (25) ways
Explanation opens after your attempt
Correct Answer
C. (20) तरीके / (20) ways
Step 1
Concept
Both teacher and time are to be chosen so \(5 \times 4=20\). For two independent decisions total ways are found by multiplication.
Step 2
Why this answer is correct
The correct answer is C. (20) तरीके / (20) ways. Both teacher and time are to be chosen so \(5 \times 4=20\). For two independent decisions total ways are found by multiplication.
Step 3
Exam Tip
शिक्षक और समय दोनों चुनने हैं इसलिए \(5 \times 4=20\)। दो स्वतंत्र निर्णयों में कुल तरीके गुणा से मिलते हैं।
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एक पुस्तकालय कार्ड में (2) कार्ड प्रकार और (8) वैधता योजनाएं हैं। एक प्रकार और एक योजना कितने तरीकों से चुनी जा सकती है?
A library card has (2) card types and (8) validity plans. In how many ways can one type and one plan be chosen?
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A (10) तरीके / (10) ways
B (8) तरीके / (8) ways
C (12) तरीके / (12) ways
D (16) तरीके / (16) ways
Explanation opens after your attempt
Correct Answer
D. (16) तरीके / (16) ways
Step 1
Concept
There are (2) card types and (8) plans so \(2 \times 8=16\). All plans are counted with each type.
Step 2
Why this answer is correct
The correct answer is D. (16) तरीके / (16) ways. There are (2) card types and (8) plans so \(2 \times 8=16\). All plans are counted with each type.
Step 3
Exam Tip
कार्ड प्रकार (2) और योजनाएं (8) हैं इसलिए \(2 \times 8=16\)। हर प्रकार के साथ सभी योजनाएं गिनी जाती हैं।
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एक खेल प्रतियोगिता में (3) टीम नाम और (6) जर्सी रंग विकल्प हैं। एक नाम और एक रंग चुनकर कितनी टीम पहचानें बनेंगी?
In a sports competition there are (3) team-name options and (6) jersey-color options. How many team identities can be made by choosing one name and one color?
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A (18) पहचानें / (18) identities
B (9) पहचानें / (9) identities
C (12) पहचानें / (12) identities
D (36) पहचानें / (36) identities
Explanation opens after your attempt
Correct Answer
A. (18) पहचानें / (18) identities
Step 1
Concept
With one name (6) colors are possible so \(3 \times 6=18\). The identity is formed from two independent choices.
Step 2
Why this answer is correct
The correct answer is A. (18) पहचानें / (18) identities. With one name (6) colors are possible so \(3 \times 6=18\). The identity is formed from two independent choices.
Step 3
Exam Tip
एक नाम के साथ (6) रंग संभव हैं इसलिए \(3 \times 6=18\)। पहचान दो स्वतंत्र विकल्पों से बन रही है।
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एक संगीत ऐप में (7) प्लेलिस्ट और (3) ध्वनि गुणवत्ता विकल्प हैं। एक प्लेलिस्ट और एक गुणवत्ता विकल्प कितने तरीकों से चुना जा सकता है?
A music app has (7) playlists and (3) sound-quality options. In how many ways can one playlist and one quality option be chosen?
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A (10) तरीके / (10) ways
B (21) तरीके / (21) ways
C (14) तरीके / (14) ways
D (24) तरीके / (24) ways
Explanation opens after your attempt
Correct Answer
B. (21) तरीके / (21) ways
Step 1
Concept
Total selections are \(7 \times 3=21\). Each playlist combines with all quality options.
Step 2
Why this answer is correct
The correct answer is B. (21) तरीके / (21) ways. Total selections are \(7 \times 3=21\). Each playlist combines with all quality options.
Step 3
Exam Tip
कुल चयन \(7 \times 3=21\) हैं। प्रत्येक प्लेलिस्ट के साथ सभी गुणवत्ता विकल्प मिलते हैं।
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एक चित्रकला सेट में (5) ब्रश आकार और (5) रंग पैलेट हैं। एक ब्रश आकार और एक पैलेट कितने तरीकों से चुने जा सकते हैं?
A painting set has (5) brush sizes and (5) color palettes. In how many ways can one brush size and one palette be chosen?
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A (10) तरीके / (10) ways
B (20) तरीके / (20) ways
C (25) तरीके / (25) ways
D (30) तरीके / (30) ways
Explanation opens after your attempt
Correct Answer
C. (25) तरीके / (25) ways
Step 1
Concept
Total ways are \(5 \times 5=25\). Even if both counts are equal still multiply.
Step 2
Why this answer is correct
The correct answer is C. (25) तरीके / (25) ways. Total ways are \(5 \times 5=25\). Even if both counts are equal still multiply.
Step 3
Exam Tip
कुल तरीके \(5 \times 5=25\) हैं। दोनों विकल्पों की संख्या बराबर हो तो भी गुणा ही करें।
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एक ट्यूशन बैच में (4) विषय और (2) माध्यम विकल्प हैं। एक विषय और एक माध्यम कितने तरीकों से चुना जा सकता है?
A tuition batch has (4) subjects and (2) medium options. In how many ways can one subject and one medium be chosen?
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A (4) तरीके / (4) ways
B (6) तरीके / (6) ways
C (12) तरीके / (12) ways
D (8) तरीके / (8) ways
Explanation opens after your attempt
Correct Answer
D. (8) तरीके / (8) ways
Step 1
Concept
For subject and medium there are \(4 \times 2=8\) ways. Use multiplication principle when both choices are required.
Step 2
Why this answer is correct
The correct answer is D. (8) तरीके / (8) ways. For subject and medium there are \(4 \times 2=8\) ways. Use multiplication principle when both choices are required.
Step 3
Exam Tip
विषय और माध्यम के लिए \(4 \times 2=8\) तरीके हैं। दोनों विकल्प जरूरी हों तो गुणन सिद्धांत उपयोग करें।
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एक जलपान काउंटर पर (9) पेय और (4) बिस्कुट पैक हैं। एक पेय और एक पैक कितने तरीकों से चुने जा सकते हैं?
At a refreshment counter there are (9) drinks and (4) biscuit packs. In how many ways can one drink and one pack be chosen?
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A (36) तरीके / (36) ways
B (13) तरीके / (13) ways
C (32) तरीके / (32) ways
D (40) तरीके / (40) ways
Explanation opens after your attempt
Correct Answer
A. (36) तरीके / (36) ways
Step 1
Concept
Total ways are \(9 \times 4=36\). Every drink is assumed possible with every pack.
Step 2
Why this answer is correct
The correct answer is A. (36) तरीके / (36) ways. Total ways are \(9 \times 4=36\). Every drink is assumed possible with every pack.
Step 3
Exam Tip
कुल तरीके \(9 \times 4=36\) हैं। हर पेय के साथ हर पैक संभव माना गया है।
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एक परीक्षा में (6) वैकल्पिक विषय और (2) परीक्षा भाषाएं हैं। एक विषय और एक भाषा कितने तरीकों से चुनी जा सकती है?
An exam has (6) optional subjects and (2) exam languages. In how many ways can one subject and one language be chosen?
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A (8) तरीके / (8) ways
B (12) तरीके / (12) ways
C (10) तरीके / (10) ways
D (18) तरीके / (18) ways
Explanation opens after your attempt
Correct Answer
B. (12) तरीके / (12) ways
Step 1
Concept
There are (6) optional subjects and (2) languages so \(6 \times 2=12\). Multiply when choosing one from each of two lists.
Step 2
Why this answer is correct
The correct answer is B. (12) तरीके / (12) ways. There are (6) optional subjects and (2) languages so \(6 \times 2=12\). Multiply when choosing one from each of two lists.
Step 3
Exam Tip
वैकल्पिक विषय (6) और भाषाएं (2) हैं इसलिए \(6 \times 2=12\)। दो सूचियों से एक-एक चुनाव में गुणा करें।
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एक डिजिटल प्रमाणपत्र में (3) मुहर डिज़ाइन और (5) हस्ताक्षर शैलियां हैं। एक मुहर और एक हस्ताक्षर शैली कितने तरीकों से चुनी जा सकती है?
A digital certificate has (3) seal designs and (5) signature styles. In how many ways can one seal and one signature style be chosen?
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A (8) तरीके / (8) ways
B (12) तरीके / (12) ways
C (15) तरीके / (15) ways
D (25) तरीके / (25) ways
Explanation opens after your attempt
Correct Answer
C. (15) तरीके / (15) ways
Step 1
Concept
Each seal has (5) signature styles so \(3 \times 5=15\). The certificate is made from two independent design stages.
Step 2
Why this answer is correct
The correct answer is C. (15) तरीके / (15) ways. Each seal has (5) signature styles so \(3 \times 5=15\). The certificate is made from two independent design stages.
Step 3
Exam Tip
हर मुहर के साथ (5) हस्ताक्षर शैलियां हैं इसलिए \(3 \times 5=15\)। प्रमाणपत्र दो स्वतंत्र डिजाइन चरणों से बन रहा है।
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एक कंप्यूटर सेट में (7) कीबोर्ड और (2) माउस विकल्प हैं। एक कीबोर्ड और एक माउस कितने तरीकों से चुने जा सकते हैं?
A computer set has (7) keyboard options and (2) mouse options. In how many ways can one keyboard and one mouse be chosen?
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A (9) तरीके / (9) ways
B (12) तरीके / (12) ways
C (7) तरीके / (7) ways
D (14) तरीके / (14) ways
Explanation opens after your attempt
Correct Answer
D. (14) तरीके / (14) ways
Step 1
Concept
Total selections are \(7 \times 2=14\). Choices multiply when making a pair of devices.
Step 2
Why this answer is correct
The correct answer is D. (14) तरीके / (14) ways. Total selections are \(7 \times 2=14\). Choices multiply when making a pair of devices.
Step 3
Exam Tip
कुल चयन \(7 \times 2=14\) हैं। उपकरणों की जोड़ी बनाने पर विकल्प गुणा होते हैं।
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एक विद्यालय यात्रा में (5) संग्रहालय और (3) दोपहर भोजन स्थान विकल्प हैं। एक संग्रहालय और एक भोजन स्थान कितने तरीकों से चुने जा सकते हैं?
On a school trip there are (5) museums and (3) lunch-place options. In how many ways can one museum and one lunch place be chosen?
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A (15) तरीके / (15) ways
B (8) तरीके / (8) ways
C (10) तरीके / (10) ways
D (25) तरीके / (25) ways
Explanation opens after your attempt
Correct Answer
A. (15) तरीके / (15) ways
Step 1
Concept
Total plans are \(5 \times 3=15\). Multiply for the two independent choices in the trip.
Step 2
Why this answer is correct
The correct answer is A. (15) तरीके / (15) ways. Total plans are \(5 \times 3=15\). Multiply for the two independent choices in the trip.
Step 3
Exam Tip
कुल योजनाएं \(5 \times 3=15\) हैं। यात्रा के दो स्वतंत्र चुनावों में गुणा करें।
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एक बैज प्रिंटिंग मशीन (4) आकार और (8) पृष्ठभूमि रंग देती है। एक आकार और एक रंग कितने तरीकों से चुने जा सकते हैं?
A badge printing machine offers (4) sizes and (8) background colors. In how many ways can one size and one color be chosen?
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A (12) तरीके / (12) ways
B (32) तरीके / (32) ways
C (28) तरीके / (28) ways
D (36) तरीके / (36) ways
Explanation opens after your attempt
Correct Answer
B. (32) तरीके / (32) ways
Step 1
Concept
For each size there are (8) colors so \(4 \times 8=32\). Multiply the choices from each independent category.
Step 2
Why this answer is correct
The correct answer is B. (32) तरीके / (32) ways. For each size there are (8) colors so \(4 \times 8=32\). Multiply the choices from each independent category.
Step 3
Exam Tip
प्रत्येक आकार के लिए (8) रंग हैं इसलिए \(4 \times 8=32\)। प्रत्येक स्वतंत्र वर्ग के विकल्पों को गुणा करें।
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एक ऑनलाइन फॉर्म में (2) पहचान प्रमाण और (6) पते के प्रमाण विकल्प हैं। एक-एक प्रमाण चुनने के कितने तरीके हैं?
An online form has (2) identity-proof options and (6) address-proof options. How many ways are there to choose one proof of each type?
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A (8) तरीके / (8) ways
B (10) तरीके / (10) ways
C (12) तरीके / (12) ways
D (16) तरीके / (16) ways
Explanation opens after your attempt
Correct Answer
C. (12) तरीके / (12) ways
Step 1
Concept
One identity proof and one address proof are needed so \(2 \times 6=12\). Apply the multiplication principle for two required proofs.
Step 2
Why this answer is correct
The correct answer is C. (12) तरीके / (12) ways. One identity proof and one address proof are needed so \(2 \times 6=12\). Apply the multiplication principle for two required proofs.
Step 3
Exam Tip
एक पहचान प्रमाण और एक पता प्रमाण चाहिए इसलिए \(2 \times 6=12\)। दो आवश्यक प्रमाणों में गुणा सिद्धांत लगाएं।
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एक कक्षा गतिविधि में (9) समूह और (3) प्रस्तुति विषय हैं। एक समूह और एक विषय कितने तरीकों से मिलाए जा सकते हैं?
In a class activity there are (9) groups and (3) presentation topics. In how many ways can one group and one topic be matched?
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A (12) तरीके / (12) ways
B (18) तरीके / (18) ways
C (24) तरीके / (24) ways
D (27) तरीके / (27) ways
Explanation opens after your attempt
Correct Answer
D. (27) तरीके / (27) ways
Step 1
Concept
The matching ways are \(9 \times 3=27\). All topics are possible for each group.
Step 2
Why this answer is correct
The correct answer is D. (27) तरीके / (27) ways. The matching ways are \(9 \times 3=27\). All topics are possible for each group.
Step 3
Exam Tip
मिलान के तरीके \(9 \times 3=27\) हैं। प्रत्येक समूह के लिए सभी विषय संभव हैं।
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एक दुकान में (6) घड़ी पट्टे और (4) घड़ी डायल हैं। एक पट्टा और एक डायल चुनकर कितनी घड़ियां बनेंगी?
A shop has (6) watch straps and (4) watch dials. How many watches can be made by choosing one strap and one dial?
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A (24) घड़ियां / (24) watches
B (10) घड़ियां / (10) watches
C (20) घड़ियां / (20) watches
D (36) घड़ियां / (36) watches
Explanation opens after your attempt
Correct Answer
A. (24) घड़ियां / (24) watches
Step 1
Concept
Strap and dial together make \(6 \times 4=24\) watches. Use multiplication principle when combining parts.
Step 2
Why this answer is correct
The correct answer is A. (24) घड़ियां / (24) watches. Strap and dial together make \(6 \times 4=24\) watches. Use multiplication principle when combining parts.
Step 3
Exam Tip
पट्टा और डायल मिलकर \(6 \times 4=24\) घड़ियां बनाते हैं। भागों को मिलाने में गुणन सिद्धांत उपयोग करें।
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एक ऑनलाइन क्विज में (5) विषय श्रेणियां और (7) अंक योजनाएं हैं। एक श्रेणी और एक योजना कितने तरीकों से चुनी जा सकती है?
An online quiz has (5) subject categories and (7) marking schemes. In how many ways can one category and one scheme be chosen?
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A (12) तरीके / (12) ways
B (35) तरीके / (35) ways
C (30) तरीके / (30) ways
D (49) तरीके / (49) ways
Explanation opens after your attempt
Correct Answer
B. (35) तरीके / (35) ways
Step 1
Concept
Total ways are \(5 \times 7=35\). Category and scheme are independent choices so multiply.
Step 2
Why this answer is correct
The correct answer is B. (35) तरीके / (35) ways. Total ways are \(5 \times 7=35\). Category and scheme are independent choices so multiply.
Step 3
Exam Tip
कुल तरीके \(5 \times 7=35\) हैं। श्रेणी और योजना स्वतंत्र चुनाव हैं इसलिए गुणा करें।
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एक विद्यालय पहचान पट्टिका में (3) आकार और (10) रंग उपलब्ध हैं। एक आकार और एक रंग कितने तरीकों से चुना जा सकता है?
A school identity plate has (3) shapes and (10) colors available. In how many ways can one shape and one color be chosen?
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A (13) तरीके / (13) ways
B (20) तरीके / (20) ways
C (30) तरीके / (30) ways
D (33) तरीके / (33) ways
Explanation opens after your attempt
Correct Answer
C. (30) तरीके / (30) ways
Step 1
Concept
Each shape can have (10) colors so \(3 \times 10=30\). Multiply to count total designs.
Step 2
Why this answer is correct
The correct answer is C. (30) तरीके / (30) ways. Each shape can have (10) colors so \(3 \times 10=30\). Multiply to count total designs.
Step 3
Exam Tip
हर आकार के साथ (10) रंग हो सकते हैं इसलिए \(3 \times 10=30\)। कुल बनावटें गिनने के लिए गुणा करें।
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एक कक्षा नोटबुक में (8) कवर रंग और (3) पृष्ठ प्रकार हैं। एक रंग और एक पृष्ठ प्रकार कितने तरीकों से चुने जा सकते हैं?
A class notebook has (8) cover colors and (3) page types. In how many ways can one color and one page type be chosen?
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A (11) तरीके / (11) ways
B (16) तरीके / (16) ways
C (21) तरीके / (21) ways
D (24) तरीके / (24) ways
Explanation opens after your attempt
Correct Answer
D. (24) तरीके / (24) ways
Step 1
Concept
Notebook options are \(8 \times 3=24\). All page types are counted with every cover color.
Step 2
Why this answer is correct
The correct answer is D. (24) तरीके / (24) ways. Notebook options are \(8 \times 3=24\). All page types are counted with every cover color.
Step 3
Exam Tip
नोटबुक के विकल्प \(8 \times 3=24\) हैं। हर कवर रंग के साथ सभी पृष्ठ प्रकार गिने जाते हैं।
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एक कार्यक्रम निमंत्रण में (4) कार्ड डिज़ाइन और (9) लिफाफा रंग हैं। एक कार्ड डिज़ाइन और एक लिफाफा रंग कितने तरीकों से चुने जा सकते हैं?
An event invitation has (4) card designs and (9) envelope colors. In how many ways can one card design and one envelope color be chosen?
#permutations-combinations fundamental-principle-counting class11
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A (36) तरीके / (36) ways
B (13) तरीके / (13) ways
C (32) तरीके / (32) ways
D (45) तरीके / (45) ways
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Correct Answer
A. (36) तरीके / (36) ways
Step 1
Concept
Card and envelope together give \(4 \times 9=36\) ways. Use the multiplication principle when choosing one from each of two parts.
Step 2
Why this answer is correct
The correct answer is A. (36) तरीके / (36) ways. Card and envelope together give \(4 \times 9=36\) ways. Use the multiplication principle when choosing one from each of two parts.
Step 3
Exam Tip
कार्ड और लिफाफा मिलाकर \(4 \times 9=36\) तरीके हैं। दो भागों से एक-एक चुनाव हो तो गुणन सिद्धांत लगाएं।
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