Class 11 Mathematics - Permutations And Combinations - Derivations of formulas and their connections Easy Quiz

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रेखा (x+3y=12) बनाने के लिए (y)-अंतःखंड क्या है?

What is the (y)-intercept used to draw (x+3y=12)?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

For the (y)-intercept, put (x=0). Then (3y=12), so (y=4).

Step 2

Why this answer is correct

The correct answer is C. (4). For the (y)-intercept, put (x=0). Then (3y=12), so (y=4).

Step 3

Exam Tip

(y)-अंतःखंड के लिए (x=0) रखें। तब (3y=12), इसलिए (y=4)।

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असमानता \(x+y\leq 5\) के आलेख में कौन-सा बिंदु हल-क्षेत्र में है?

Which point lies in the solution region of \(x+y\leq 5\)?

Explanation opens after your attempt
Correct Answer

C. ((1,2))

Step 1

Concept

Substituting ((1,2)) gives \(3\leq 5\), which is true. Check options by substitution.

Step 2

Why this answer is correct

The correct answer is C. ((1,2)). Substituting ((1,2)) gives \(3\leq 5\), which is true. Check options by substitution.

Step 3

Exam Tip

((1,2)) रखने पर \(3\leq 5\) सत्य है। विकल्पों में बिंदु रखकर जाँचें।

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एक पहचान कोड में (3) अक्षर और (1) अंक है। अक्षरों के लिए (5) विकल्प और अंक के लिए (8) विकल्प हैं। पुनरावृत्ति सहित कितने कोड बनेंगे?

An identity code has (3) letters and (1) digit. There are (5) choices for each letter and (8) choices for the digit. With repetition allowed, how many codes are possible?

Explanation opens after your attempt
Correct Answer

D. (1000)

Step 1

Concept

Total choices are \(5\times5\times5\times8=1000\). In mixed codes, write choices for each position separately.

Step 2

Why this answer is correct

The correct answer is D. (1000). Total choices are \(5\times5\times5\times8=1000\). In mixed codes, write choices for each position separately.

Step 3

Exam Tip

कुल विकल्प \(5\times5\times5\times8=1000\) हैं। मिश्रित कोड में हर स्थान का विकल्प अलग लिखें।

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असमानता (x+2y>8) में कौन-सा बिंदु हल-क्षेत्र में है?

Which point lies in the solution region of (x+2y>8)?

Explanation opens after your attempt
Correct Answer

B. ((2,3))

Step 1

Concept

Substitution must make the expression strictly greater than (8). Here no equality is allowed in a strict inequality.

Step 2

Why this answer is correct

The correct answer is B. ((2,3)). Substitution must make the expression strictly greater than (8). Here no equality is allowed in a strict inequality.

Step 3

Exam Tip

((2,3)) रखने पर (2+6>8) अर्थात (8>8) नहीं, इसलिए ध्यान दें। सही जाँच में कोई बराबरी नहीं चाहिए।

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एक सिक्का उछालने और एक पासा फेंकने पर कुल परिणाम कितने होंगे?

How many total outcomes are possible when a coin is tossed and a die is rolled?

Explanation opens after your attempt
Correct Answer

A. (12)

Step 1

Concept

A coin has (2) outcomes and a die has (6), so \(2\times6=12\). Multiply when two experiments are performed together.

Step 2

Why this answer is correct

The correct answer is A. (12). A coin has (2) outcomes and a die has (6), so \(2\times6=12\). Multiply when two experiments are performed together.

Step 3

Exam Tip

सिक्के के (2) और पासे के (6) परिणाम हैं इसलिए \(2\times6=12\)। दो प्रयोग साथ हों तो गुणन करें।

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असमानता (x+2y>8) में कौन-सा बिंदु सच में हल-क्षेत्र में आता है?

Which point truly lies in the solution region of (x+2y>8)?

Explanation opens after your attempt
Correct Answer

D. ((2,4))

Step 1

Concept

Substituting ((2,4)) gives (2+8>8), which is true. Do not choose an equal boundary point in a strict inequality.

Step 2

Why this answer is correct

The correct answer is D. ((2,4)). Substituting ((2,4)) gives (2+8>8), which is true. Do not choose an equal boundary point in a strict inequality.

Step 3

Exam Tip

((2,4)) रखने पर (2+8>8) सत्य है। कठोर असमानता में बराबर वाला बिंदु न चुनें।

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दो अलग-अलग सिक्के उछाले जाते हैं। कुल परिणाम कितने होंगे?

Two distinct coins are tossed. How many total outcomes are possible?

Explanation opens after your attempt
Correct Answer

B. (4)

Step 1

Concept

Each coin has (2) outcomes, so \(2\times2=4\). Treat distinct coins as separate stages.

Step 2

Why this answer is correct

The correct answer is B. (4). Each coin has (2) outcomes, so \(2\times2=4\). Treat distinct coins as separate stages.

Step 3

Exam Tip

हर सिक्के के (2) परिणाम हैं इसलिए \(2\times2=4\)। अलग-अलग सिक्कों को अलग चरण मानें।

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असमानता \(2x+y\leq 7\) में बिंदु ((3,1)) की स्थिति क्या है?

What is the status of ((3,1)) for \(2x+y\leq 7\)?

Explanation opens after your attempt
Correct Answer

A. हल में हैIn the solution

Step 1

Concept

Substituting ((3,1)) gives \(6+1\leq 7\), which is true. It lies on the boundary line.

Step 2

Why this answer is correct

The correct answer is A. हल में है / In the solution. Substituting ((3,1)) gives \(6+1\leq 7\), which is true. It lies on the boundary line.

Step 3

Exam Tip

((3,1)) रखने पर \(6+1\leq 7\) सत्य है। यह सीमा रेखा पर स्थित है।

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दो पासे एक साथ फेंके जाते हैं। कुल क्रमित परिणाम कितने होंगे?

Two dice are rolled together. How many ordered outcomes are possible?

Explanation opens after your attempt
Correct Answer

C. (36)

Step 1

Concept

The first die has (6) outcomes and the second has (6), so \(6\times6=36\). In ordered outcomes, the roles of both dice are distinct.

Step 2

Why this answer is correct

The correct answer is C. (36). The first die has (6) outcomes and the second has (6), so \(6\times6=36\). In ordered outcomes, the roles of both dice are distinct.

Step 3

Exam Tip

पहले पासे के (6) और दूसरे के (6) परिणाम हैं इसलिए \(6\times6=36\)। क्रमित परिणाम में दोनों पासों की भूमिका अलग रहती है।

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एक चक्र में (4) रंग और (3) आकार उपलब्ध हैं। एक रंग और एक आकार चुनकर डिज़ाइन कितने तरीकों से बनेगा?

A wheel has (4) colors and (3) shapes available. In how many ways can a design be made by choosing one color and one shape?

Explanation opens after your attempt
Correct Answer

D. (12)

Step 1

Concept

One color and one shape are needed, so \(4\times3=12\). Multiply two independent attributes.

Step 2

Why this answer is correct

The correct answer is D. (12). One color and one shape are needed, so \(4\times3=12\). Multiply two independent attributes.

Step 3

Exam Tip

एक रंग और एक आकार चाहिए इसलिए \(4\times3=12\)। दो स्वतंत्र विशेषताओं को गुणा करें।

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किस असमानता के आलेख में सीमा रेखा शामिल होती है?

For which inequality is the boundary line included in the graph?

Explanation opens after your attempt
Correct Answer

C. \(2x+y\leq 9\)

Step 1

Concept

The boundary line is included for \(\leq\) and \(\geq\). Choose by checking the inequality sign.

Step 2

Why this answer is correct

The correct answer is C. \(2x+y\leq 9\). The boundary line is included for \(\leq\) and \(\geq\). Choose by checking the inequality sign.

Step 3

Exam Tip

\(\leq\) और \(\geq\) में सीमा रेखा शामिल होती है। प्रश्न में चिह्न देखकर उत्तर चुनें।

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एक पासवर्ड में पहले (3) अक्षरों में से एक और फिर (4) अंकों में से एक चुनना है। कितने पासवर्ड बनेंगे?

A password is made by choosing one of (3) letters first and then one of (4) digits. How many passwords are possible?

Explanation opens after your attempt
Correct Answer

A. (12)

Step 1

Concept

The first stage has (3) choices and the second has (4), so \(3\times4=12\). Fill password positions in order.

Step 2

Why this answer is correct

The correct answer is A. (12). The first stage has (3) choices and the second has (4), so \(3\times4=12\). Fill password positions in order.

Step 3

Exam Tip

पहले चरण में (3) और दूसरे में (4) विकल्प हैं इसलिए \(3\times4=12\)। पासवर्ड के स्थानों को क्रम से भरें।

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किस असमानता के आलेख में सीमा रेखा शामिल नहीं होती?

For which inequality is the boundary line not included in the graph?

Explanation opens after your attempt
Correct Answer

D. (y<x+2)

Step 1

Concept

For (<) and (>), the boundary line is not included. So a dashed line is drawn.

Step 2

Why this answer is correct

The correct answer is D. (y<x+2). For (<) and (>), the boundary line is not included. So a dashed line is drawn.

Step 3

Exam Tip

(<) और (>) में सीमा रेखा शामिल नहीं होती। इसलिए टूटी हुई रेखा बनाई जाती है।

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एक प्रतियोगिता में (5) कविता विषय और (6) चित्रकला विषय हैं। विद्यार्थी केवल एक विषय चुन सकता है। चयन के कितने तरीके हैं?

In a competition, there are (5) poetry topics and (6) painting topics. A student can choose only one topic. How many choices are possible?

Explanation opens after your attempt
Correct Answer

B. (11)

Step 1

Concept

Only one topic is to be chosen, so (5+6=11). Add when option groups are separate and not chosen together.

Step 2

Why this answer is correct

The correct answer is B. (11). Only one topic is to be chosen, so (5+6=11). Add when option groups are separate and not chosen together.

Step 3

Exam Tip

केवल एक विषय चुनना है इसलिए (5+6=11)। विकल्प समूह अलग हों और साथ नहीं चुने जाते हों तो जोड़ें।

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असमानता \(x+y\leq 1\) में मूल बिंदु किस कारण हल में है?

Why is the origin in the solution of \(x+y\leq 1\)?

Explanation opens after your attempt
Correct Answer

A. क्योंकि \(0\leq 1\)Because \(0\leq 1\)

Step 1

Concept

Substituting the origin gives \(0\leq 1\), which is true. Hence, the side with the origin is the solution.

Step 2

Why this answer is correct

The correct answer is A. क्योंकि \(0\leq 1\) / Because \(0\leq 1\). Substituting the origin gives \(0\leq 1\), which is true. Hence, the side with the origin is the solution.

Step 3

Exam Tip

मूल बिंदु रखने पर \(0\leq 1\) सत्य मिलता है। इसलिए मूल बिंदु वाला पक्ष हल है।

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एक स्कूल यात्रा के लिए (3) संग्रहालय या (4) पार्क में से एक स्थान चुनना है। कुल विकल्प कितने हैं?

For a school trip, one place is to be chosen from (3) museums or (4) parks. How many total options are there?

Explanation opens after your attempt
Correct Answer

C. (7)

Step 1

Concept

The place will be a museum or a park, so (3+4=7). Use the addition rule for separate “or” choices.

Step 2

Why this answer is correct

The correct answer is C. (7). The place will be a museum or a park, so (3+4=7). Use the addition rule for separate “or” choices.

Step 3

Exam Tip

स्थान संग्रहालय या पार्क में से होगा इसलिए (3+4=7)। “या” वाले अलग चयन में योग का नियम लगाएँ।

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असमानता \(x+y\geq -3\) में मूल बिंदु हल में है या नहीं?

Is the origin in the solution of \(x+y\geq -3\)?

Explanation opens after your attempt
Correct Answer

A. हाँYes

Step 1

Concept

Substituting ((0,0)) gives \(0\geq -3\), which is true. So the origin is in the solution region.

Step 2

Why this answer is correct

The correct answer is A. हाँ / Yes. Substituting ((0,0)) gives \(0\geq -3\), which is true. So the origin is in the solution region.

Step 3

Exam Tip

((0,0)) रखने पर \(0\geq -3\) सत्य है। इसलिए मूल बिंदु हल-क्षेत्र में है।

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एक ऐप में (4) भाषा विकल्प और (2) थीम विकल्प हैं। एक भाषा और एक थीम चुनने के कितने तरीके हैं?

An app has (4) language options and (2) theme options. In how many ways can one language and one theme be selected?

Explanation opens after your attempt
Correct Answer

D. (8)

Step 1

Concept

Both selections are made together, so \(4\times2=8\). Multiply independent setting options.

Step 2

Why this answer is correct

The correct answer is D. (8). Both selections are made together, so \(4\times2=8\). Multiply independent setting options.

Step 3

Exam Tip

दोनों चयन साथ करने हैं इसलिए \(4\times2=8\)। सेटिंग्स के स्वतंत्र विकल्पों को गुणा करें।

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असमानता \(x-y\leq 2\) के लिए मूल बिंदु परीक्षण क्या देता है?

What does the origin test give for \(x-y\leq 2\)?

Explanation opens after your attempt
Correct Answer

A. \(0\leq 2\) सत्य\(0\leq 2\) true

Step 1

Concept

Putting the origin gives left side (0). Hence, the test is true.

Step 2

Why this answer is correct

The correct answer is A. \(0\leq 2\) सत्य / \(0\leq 2\) true. Putting the origin gives left side (0). Hence, the test is true.

Step 3

Exam Tip

मूल बिंदु रखने पर बायाँ पक्ष (0) है। इसलिए परीक्षण सत्य है।

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एक छात्र (2) बैग, (5) पानी की बोतल और (3) टिफिन में से एक-एक चीज़ चुनता है। कुल तरीके कितने होंगे?

A student chooses one item each from (2) bags, (5) water bottles, and (3) lunch boxes. How many total ways are possible?

Explanation opens after your attempt
Correct Answer

A. (30)

Step 1

Concept

Total ways are \(2\times5\times3=30\). Multiply when one item is chosen from each category.

Step 2

Why this answer is correct

The correct answer is A. (30). Total ways are \(2\times5\times3=30\). Multiply when one item is chosen from each category.

Step 3

Exam Tip

कुल तरीके \(2\times5\times3=30\) हैं। एक-एक चीज़ अलग श्रेणियों से हो तो गुणा करें।

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असमानता \(x-y\geq 2\) के लिए मूल बिंदु परीक्षण क्या बताता है?

What does the origin test show for \(x-y\geq 2\)?

Explanation opens after your attempt
Correct Answer

B. मूल बिंदु हल में नहीं हैOrigin is not in solution

Step 1

Concept

Substituting ((0,0)) gives \(0\geq 2\), which is false. So the side with the origin is not chosen.

Step 2

Why this answer is correct

The correct answer is B. मूल बिंदु हल में नहीं है / Origin is not in solution. Substituting ((0,0)) gives \(0\geq 2\), which is false. So the side with the origin is not chosen.

Step 3

Exam Tip

((0,0)) रखने पर \(0\geq 2\) असत्य है। इसलिए मूल बिंदु वाला पक्ष नहीं चुना जाएगा।

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एक परीक्षा कोड में (2) अंकों के बाद (1) अक्षर है। अंक (0) से (9) तक और अक्षर (5) दिए गए हैं। पुनरावृत्ति सहित कितने कोड बनेंगे?

An exam code has (2) digits followed by (1) letter. Digits are from (0) to (9) and (5) letters are given. With repetition allowed, how many codes can be formed?

Explanation opens after your attempt
Correct Answer

B. (500)

Step 1

Concept

The two digit positions have (10) and (10) choices, and the letter has (5) choices. Total ways are \(10\times10\times5=500\).

Step 2

Why this answer is correct

The correct answer is B. (500). The two digit positions have (10) and (10) choices, and the letter has (5) choices. Total ways are \(10\times10\times5=500\).

Step 3

Exam Tip

दो अंक स्थानों के (10) और (10) विकल्प तथा अक्षर के (5) विकल्प हैं। कुल \(10\times10\times5=500\) हैं।

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यदि सीमा रेखा (x+2y=6) है और असमानता \(x+2y\leq 6\) है, तो रेखा कैसी होगी?

If the boundary line is (x+2y=6) and the inequality is \(x+2y\leq 6\), what type of line is drawn?

Explanation opens after your attempt
Correct Answer

B. ठोस रेखाSolid line

Step 1

Concept

For \(\leq\), the boundary line is included. Therefore, a solid line is drawn.

Step 2

Why this answer is correct

The correct answer is B. ठोस रेखा / Solid line. For \(\leq\), the boundary line is included. Therefore, a solid line is drawn.

Step 3

Exam Tip

\(\leq\) में सीमा रेखा शामिल होती है। इसलिए ठोस रेखा बनती है।

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एक (4)-अंकीय पिन में प्रत्येक स्थान पर (1) से (6) तक अंक आ सकते हैं। पुनरावृत्ति की अनुमति है तो कुल पिन कितने हैं?

In a (4)-digit PIN, each position can have digits from (1) to (6). If repetition is allowed, how many PINs are possible?

Explanation opens after your attempt
Correct Answer

B. (1296)

Step 1

Concept

Each position has (6) choices, so \(6^4=1296\). When the same choices repeat, using powers is faster.

Step 2

Why this answer is correct

The correct answer is B. (1296). Each position has (6) choices, so \(6^4=1296\). When the same choices repeat, using powers is faster.

Step 3

Exam Tip

प्रत्येक स्थान के (6) विकल्प हैं इसलिए \(6^4=1296\)। समान विकल्प बार-बार हों तो घात का प्रयोग तेज होता है।

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यदि असमानता (x+2y>6) है, तो सीमा रेखा के बारे में सही कथन कौन-सा है?

For the inequality (x+2y>6), which statement about the boundary line is correct?

Explanation opens after your attempt
Correct Answer

B. रेखा टूटी हुई होगीThe line will be dashed

Step 1

Concept

For (>), the boundary line is not included in the solution. So a dashed line is drawn.

Step 2

Why this answer is correct

The correct answer is B. रेखा टूटी हुई होगी / The line will be dashed. For (>), the boundary line is not included in the solution. So a dashed line is drawn.

Step 3

Exam Tip

(>) में सीमा रेखा हल में शामिल नहीं होती। इसलिए टूटी हुई रेखा खींची जाती है।

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अंकों (1,2,3,4) से पुनरावृत्ति बिना (4)-अंकीय संख्याएँ कितनी बनेंगी?

How many (4)-digit numbers can be formed from digits (1,2,3,4) without repetition?

Explanation opens after your attempt
Correct Answer

C. (24)

Step 1

Concept

The four positions have (4,3,2,1) choices, so \(4\times3\times2\times1=24\). If all digits are used, choices decrease step by step.

Step 2

Why this answer is correct

The correct answer is C. (24). The four positions have (4,3,2,1) choices, so \(4\times3\times2\times1=24\). If all digits are used, choices decrease step by step.

Step 3

Exam Tip

चार स्थानों के विकल्प (4,3,2,1) हैं इसलिए \(4\times3\times2\times1=24\)। सभी अंक उपयोग हों तो विकल्प क्रम से घटते हैं।

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किस असमानता का हल-क्षेत्र रेखा (y=4) के नीचे होगा?

Which inequality has the solution region below the line (y=4)?

Explanation opens after your attempt
Correct Answer

C. \(y\leq 4\)

Step 1

Concept

Below the line, (y) is less than or equal to (4). Hence, \(y\leq 4\) is correct.

Step 2

Why this answer is correct

The correct answer is C. \(y\leq 4\). Below the line, (y) is less than or equal to (4). Hence, \(y\leq 4\) is correct.

Step 3

Exam Tip

रेखा के नीचे (y) का मान (4) से कम या बराबर होता है। इसलिए \(y\leq 4\) सही है।

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अंकों (0,1,2,3) से पुनरावृत्ति बिना (3)-अंकीय सम संख्याएँ कितनी बनेंगी?

How many (3)-digit even numbers can be formed from digits (0,1,2,3) without repetition?

Explanation opens after your attempt
Correct Answer

B. (8)

Step 1

Concept

If the units digit is (0), there are \(3\times2=6\) ways, and if it is (2), there are \(2\times2=4\) ways. Total ways are (6+4=10).

Step 2

Why this answer is correct

The correct answer is B. (8). If the units digit is (0), there are \(3\times2=6\) ways, and if it is (2), there are \(2\times2=4\) ways. Total ways are (6+4=10).

Step 3

Exam Tip

यदि इकाई (0) है तो \(3\times2=6\) तरीके हैं और यदि इकाई (2) है तो सैकड़े के (2) तथा दहाई के (2) तरीके हैं। कुल (6+4=10) हैं।

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किस असमानता का हल-क्षेत्र रेखा (x=-2) के दाईं ओर होगा?

Which inequality has the solution region to the right of the line (x=-2)?

Explanation opens after your attempt
Correct Answer

B. (x>-2)

Step 1

Concept

To the right, (x) is greater than (-2). Therefore, (x>-2) is correct.

Step 2

Why this answer is correct

The correct answer is B. (x>-2). To the right, (x) is greater than (-2). Therefore, (x>-2) is correct.

Step 3

Exam Tip

दाईं ओर (x) का मान (-2) से बड़ा होता है। इसलिए (x>-2) सही है।

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एक कैफे में (3) प्रकार की चाय, (4) प्रकार की कॉफी और (2) प्रकार का जूस है। केवल एक पेय चुनने के कितने तरीके हैं?

A cafe has (3) types of tea, (4) types of coffee, and (2) types of juice. In how many ways can only one drink be chosen?

Explanation opens after your attempt
Correct Answer

C. (9)

Step 1

Concept

Only one drink is chosen, so (3+4+2=9). Add when the groups are alternatives, not simultaneous choices.

Step 2

Why this answer is correct

The correct answer is C. (9). Only one drink is chosen, so (3+4+2=9). Add when the groups are alternatives, not simultaneous choices.

Step 3

Exam Tip

केवल एक पेय चुनना है इसलिए (3+4+2=9)। एक ही श्रेणी नहीं बल्कि वैकल्पिक समूह हों तो जोड़ें।

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रेखा (x+2y=4) पर कौन-सा बिंदु स्थित है?

Which point lies on the line (x+2y=4)?

Explanation opens after your attempt
Correct Answer

B. ((2,1))

Step 1

Concept

Substituting ((2,1)) gives (2+2=4). A point on the line must satisfy equality.

Step 2

Why this answer is correct

The correct answer is B. ((2,1)). Substituting ((2,1)) gives (2+2=4). A point on the line must satisfy equality.

Step 3

Exam Tip

((2,1)) रखने पर (2+2=4) मिलता है। रेखा पर बिंदु के लिए बराबरी सत्य होनी चाहिए।

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एक टीम जर्सी के लिए (5) रंग और (4) आकार उपलब्ध हैं। एक रंग और एक आकार चुनने के कितने तरीके हैं?

For a team jersey, (5) colors and (4) sizes are available. In how many ways can one color and one size be chosen?

Explanation opens after your attempt
Correct Answer

D. (20)

Step 1

Concept

Both color and size are to be selected, so \(5\times4=20\). Multiply when product features are independent.

Step 2

Why this answer is correct

The correct answer is D. (20). Both color and size are to be selected, so \(5\times4=20\). Multiply when product features are independent.

Step 3

Exam Tip

रंग और आकार दोनों चुनने हैं इसलिए \(5\times4=20\)। उत्पाद की अलग विशेषताएँ स्वतंत्र हों तो गुणा करें।

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रेखा (3x+y=9) पर कौन-सा बिंदु स्थित है?

Which point lies on the line (3x+y=9)?

Explanation opens after your attempt
Correct Answer

A. ((2,3))

Step 1

Concept

Substituting ((2,3)) gives (6+3=9), which is true. Substitute coordinates directly in point testing.

Step 2

Why this answer is correct

The correct answer is A. ((2,3)). Substituting ((2,3)) gives (6+3=9), which is true. Substitute coordinates directly in point testing.

Step 3

Exam Tip

((2,3)) रखने पर (6+3=9) सत्य है। बिंदु जाँच में सीधे मान रखें।

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एक बैज में (3) पृष्ठभूमि रंग, (2) प्रतीक और (4) बॉर्डर विकल्प हैं। एक बैज कितने तरीकों से बनेगा?

A badge has (3) background colors, (2) symbols, and (4) border options. In how many ways can one badge be made?

Explanation opens after your attempt
Correct Answer

A. (24)

Step 1

Concept

The three stages are independent, so \(3\times2\times4=24\). In design questions, treat each feature as one stage.

Step 2

Why this answer is correct

The correct answer is A. (24). The three stages are independent, so \(3\times2\times4=24\). In design questions, treat each feature as one stage.

Step 3

Exam Tip

तीनों चरण स्वतंत्र हैं इसलिए \(3\times2\times4=24\)। डिज़ाइन प्रश्नों में हर फीचर को एक चरण मानें।

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असमानता \(x+y\leq 8\) के आलेख में ((8,0)) की स्थिति क्या है?

In the graph of \(x+y\leq 8\), what is the status of ((8,0))?

Explanation opens after your attempt
Correct Answer

A. हल में है और सीमा पर हैIn solution and on boundary

Step 1

Concept

Substituting ((8,0)) gives \(8\leq 8\), which is true. Equality means the point is on the boundary.

Step 2

Why this answer is correct

The correct answer is A. हल में है और सीमा पर है / In solution and on boundary. Substituting ((8,0)) gives \(8\leq 8\), which is true. Equality means the point is on the boundary.

Step 3

Exam Tip

((8,0)) रखने पर \(8\leq 8\) सत्य है। बराबरी होने से बिंदु सीमा पर भी है।

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एक छात्र (6) ऑनलाइन कोर्स या (3) ऑफलाइन कोर्स में से केवल एक कोर्स चुनता है। कुल चयन कितने हैं?

A student chooses only one course from (6) online courses or (3) offline courses. How many total choices are there?

Explanation opens after your attempt
Correct Answer

B. (9)

Step 1

Concept

Only one course is to be chosen, so (6+3=9). Add when the options are not taken together.

Step 2

Why this answer is correct

The correct answer is B. (9). Only one course is to be chosen, so (6+3=9). Add when the options are not taken together.

Step 3

Exam Tip

एक ही कोर्स चुनना है इसलिए (6+3=9)। विकल्पों को एक साथ नहीं लेना हो तो योग करें।

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एक कार्ड पर (4) चित्र विकल्प और (5) संदेश विकल्प हैं। एक चित्र और एक संदेश चुनकर कार्ड कितने तरीकों से बनेगा?

A card has (4) picture options and (5) message options. In how many ways can a card be made by choosing one picture and one message?

Explanation opens after your attempt
Correct Answer

C. (20)

Step 1

Concept

One picture and one message are both needed, so \(4\times5=20\). The multiplication principle applies to combined selection.

Step 2

Why this answer is correct

The correct answer is C. (20). One picture and one message are both needed, so \(4\times5=20\). The multiplication principle applies to combined selection.

Step 3

Exam Tip

एक चित्र और एक संदेश दोनों चाहिए इसलिए \(4\times5=20\)। संयुक्त चयन में गुणा सिद्धांत लागू होता है।

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असमानता \(2x+3y\leq 12\) का (x)-अंतःखंड क्या है?

What is the (x)-intercept of \(2x+3y\leq 12\)'s boundary line?

Explanation opens after your attempt
Correct Answer

C. (6)

Step 1

Concept

The boundary line is (2x+3y=12). Putting (y=0) gives (x=6).

Step 2

Why this answer is correct

The correct answer is C. (6). The boundary line is (2x+3y=12). Putting (y=0) gives (x=6).

Step 3

Exam Tip

सीमा रेखा (2x+3y=12) है। (y=0) रखने पर (x=6) मिलता है।

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एक पेन ड्राइव का रंग (3) विकल्पों में से और क्षमता (4) विकल्पों में से चुनी जाती है। कुल मॉडल कितने बनेंगे?

A pen drive color is chosen from (3) options and capacity from (4) options. How many total models can be formed?

Explanation opens after your attempt
Correct Answer

D. (12)

Step 1

Concept

Total models are \(3\times4=12\). In product models, multiply each independent feature.

Step 2

Why this answer is correct

The correct answer is D. (12). Total models are \(3\times4=12\). In product models, multiply each independent feature.

Step 3

Exam Tip

कुल मॉडल \(3\times4=12\) होंगे। उत्पाद मॉडल में हर स्वतंत्र विशेषता को गुणा करें।

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असमानता \(2x+3y\leq 12\) की सीमा रेखा का (y)-अंतःखंड क्या है?

What is the (y)-intercept of the boundary line of \(2x+3y\leq 12\)?

Explanation opens after your attempt
Correct Answer

C. (4)

Step 1

Concept

Put (x=0) in the boundary line. Then (3y=12), so (y=4).

Step 2

Why this answer is correct

The correct answer is C. (4). Put (x=0) in the boundary line. Then (3y=12), so (y=4).

Step 3

Exam Tip

सीमा रेखा में (x=0) रखें। तब (3y=12), इसलिए (y=4)।

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एक कक्षा में (4) मॉनिटर उम्मीदवार और (3) सह-मॉनिटर उम्मीदवार हैं। एक मॉनिटर और एक सह-मॉनिटर चुनने के कितने तरीके हैं?

In a class, there are (4) monitor candidates and (3) assistant monitor candidates. In how many ways can one monitor and one assistant monitor be chosen?

Explanation opens after your attempt
Correct Answer

A. (12)

Step 1

Concept

Two different posts are to be filled, so \(4\times3=12\). Treat selections for different posts as ordered stages.

Step 2

Why this answer is correct

The correct answer is A. (12). Two different posts are to be filled, so \(4\times3=12\). Treat selections for different posts as ordered stages.

Step 3

Exam Tip

दो अलग पद भरने हैं इसलिए \(4\times3=12\)। अलग पदों के चयन को क्रमबद्ध चरण मानें।

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असमानता \(x+y\leq 10\) में कौन-सा बिंदु हल-क्षेत्र के बाहर है?

Which point is outside the solution region of \(x+y\leq 10\)?

Explanation opens after your attempt
Correct Answer

C. ((6,7))

Step 1

Concept

Substituting ((6,7)) gives \(13\leq 10\), which is false. An outside point does not satisfy the inequality.

Step 2

Why this answer is correct

The correct answer is C. ((6,7)). Substituting ((6,7)) gives \(13\leq 10\), which is false. An outside point does not satisfy the inequality.

Step 3

Exam Tip

((6,7)) रखने पर \(13\leq 10\) असत्य है। बाहर वाला बिंदु असमानता को संतुष्ट नहीं करता।

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एक व्यक्ति (5) बसों में से एक से स्टेशन जाता है और फिर (2) ऑटो में से एक से घर जाता है। कुल यात्रा तरीके कितने हैं?

A person takes one of (5) buses to the station and then one of (2) autos to home. How many total travel ways are possible?

Explanation opens after your attempt
Correct Answer

B. (10)

Step 1

Concept

There are (5) choices first and (2) choices next, so \(5\times2=10\). Multiply the stages in a sequential journey.

Step 2

Why this answer is correct

The correct answer is B. (10). There are (5) choices first and (2) choices next, so \(5\times2=10\). Multiply the stages in a sequential journey.

Step 3

Exam Tip

पहले (5) और फिर (2) विकल्प हैं इसलिए \(5\times2=10\)। क्रम से होने वाली यात्रा में चरणों को गुणा करें।

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असमानता \(y\geq x\) के आलेख में बिंदु ((2,5)) कहाँ आता है?

In the graph of \(y\geq x\), where does ((2,5)) lie?

Explanation opens after your attempt
Correct Answer

A. हल-क्षेत्र मेंIn the solution region

Step 1

Concept

For ((2,5)), \(5\geq 2\) is true. Hence, the point lies in the solution region.

Step 2

Why this answer is correct

The correct answer is A. हल-क्षेत्र में / In the solution region. For ((2,5)), \(5\geq 2\) is true. Hence, the point lies in the solution region.

Step 3

Exam Tip

((2,5)) में \(5\geq 2\) सत्य है। इसलिए बिंदु हल-क्षेत्र में है।

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एक वेबसाइट साइनअप में (3) प्रोफाइल फोटो विकल्प और (6) यूज़रनेम स्टाइल विकल्प हैं। एक प्रोफाइल बनाने के कितने तरीके हैं?

A website signup has (3) profile photo options and (6) username style options. In how many ways can one profile be made?

Explanation opens after your attempt
Correct Answer

C. (18)

Step 1

Concept

Both choices are independent, so \(3\times6=18\). In profile setup, multiply every required selection.

Step 2

Why this answer is correct

The correct answer is C. (18). Both choices are independent, so \(3\times6=18\). In profile setup, multiply every required selection.

Step 3

Exam Tip

दोनों चुनाव स्वतंत्र हैं इसलिए \(3\times6=18\)। प्रोफाइल सेटअप में हर अनिवार्य चयन को गुणा करें।

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एक गेम अवतार में (2) चेहरे, (4) टोपी और (3) पोशाक विकल्प हैं। एक अवतार कितने तरीकों से बनाया जा सकता है?

A game avatar has (2) face options, (4) hat options, and (3) costume options. In how many ways can one avatar be created?

Explanation opens after your attempt
Correct Answer

D. (24)

Step 1

Concept

Total avatars are \(2\times4\times3=24\). When there are three independent features, multiply all choices.

Step 2

Why this answer is correct

The correct answer is D. (24). Total avatars are \(2\times4\times3=24\). When there are three independent features, multiply all choices.

Step 3

Exam Tip

कुल अवतार \(2\times4\times3=24\) होंगे। तीन स्वतंत्र फीचर हों तो सभी विकल्पों को गुणा करें।

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असमानता \(2x-y\leq 4\) को (y) के रूप में लिखने पर क्या मिलेगा?

What do we get when \(2x-y\leq 4\) is written in terms of (y)?

Explanation opens after your attempt
Correct Answer

A. \(y\geq 2x-4\)

Step 1

Concept

In \(-y\leq 4-2x\), dividing by (-1) reverses the sign. In exams, always reverse the sign when multiplying or dividing by a negative number.

Step 2

Why this answer is correct

The correct answer is A. \(y\geq 2x-4\). In \(-y\leq 4-2x\), dividing by (-1) reverses the sign. In exams, always reverse the sign when multiplying or dividing by a negative number.

Step 3

Exam Tip

\(-y\leq 4-2x\) में (-1) से भाग देने पर चिह्न बदलता है। परीक्षा में ऋणात्मक से गुणा या भाग करते समय चिह्न जरूर बदलें।

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असमानता (x-2y<6) की सीमा रेखा बनाने के लिए कौन-सा समीकरण लिया जाएगा?

Which equation is used to draw the boundary line of (x-2y<6)?

Explanation opens after your attempt
Correct Answer

A. (x-2y=6)

Step 1

Concept

For the boundary line, replace the inequality sign with equality. Since the sign is (<), the line will be dashed.

Step 2

Why this answer is correct

The correct answer is A. (x-2y=6). For the boundary line, replace the inequality sign with equality. Since the sign is (<), the line will be dashed.

Step 3

Exam Tip

सीमा रेखा के लिए असमानता चिह्न को बराबर में बदलते हैं। (<) होने से रेखा टूटी हुई बनेगी।

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असमानता \(y\leq -x+3\) के आलेख में कौन-सा बिंदु हल-क्षेत्र में है?

Which point lies in the solution region of \(y\leq -x+3\)?

Explanation opens after your attempt
Correct Answer

B. ((2,1))

Step 1

Concept

Substituting ((2,1)) gives \(1\leq 1\), which is true. Boundary points are included for \(\leq\).

Step 2

Why this answer is correct

The correct answer is B. ((2,1)). Substituting ((2,1)) gives \(1\leq 1\), which is true. Boundary points are included for \(\leq\).

Step 3

Exam Tip

((2,1)) रखने पर \(1\leq 1\) सत्य है। बराबरी वाले बिंदु \(\leq\) में हल में शामिल होते हैं।

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असमानता (x+y>1) के आलेख में मूल बिंदु के बारे में सही कथन कौन-सा है?

Which statement about the origin is correct for the graph of (x+y>1)?

Explanation opens after your attempt
Correct Answer

C. मूल बिंदु हल-क्षेत्र में नहीं हैThe origin is not in the solution region

Step 1

Concept

Substituting ((0,0)) gives (0>1), which is false. Therefore, the side containing the origin is not shaded.

Step 2

Why this answer is correct

The correct answer is C. मूल बिंदु हल-क्षेत्र में नहीं है / The origin is not in the solution region. Substituting ((0,0)) gives (0>1), which is false. Therefore, the side containing the origin is not shaded.

Step 3

Exam Tip

((0,0)) रखने पर (0>1) असत्य है। इसलिए मूल बिंदु वाले पक्ष को छायांकित नहीं करेंगे।

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FAQs

Class 11 Mathematics Quiz FAQs

How many questions are in this quiz?

This level is designed for 50 active questions. Currently 50 questions are available for the selected class and difficulty.

Is there a timer in this quiz?

Yes, the timer uses 40 seconds per question for Easy difficulty and shows the total remaining time on the page.

Can I open each question separately?

Yes, every question has its own SEO-friendly page with answer, explanation and related practice links.