Concept-wise Practice

word-problem MCQ Questions for Class 10

word-problem se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

855 questions tagged with word-problem.

एक विद्यार्थी पहले दिन (50) रुपये बचाता है और हर अगले दिन (20) रुपये अधिक बचाता है। (18) दिनों में कुल कितनी बचत होगी?

A student saves (50) rupees on the first day and (20) rupees more each next day. What will be the total saving in (18) days?

Explanation opens after your attempt
Correct Answer

C. (3960)

Step 1

Concept

The total saving is (S_{18}=9[100+17(20)]=3960). Exam tip: treat the daily increase as the common difference.

Step 2

Why this answer is correct

The correct answer is C. (3960). The total saving is (S_{18}=9[100+17(20)]=3960). Exam tip: treat the daily increase as the common difference.

Step 3

Exam Tip

कुल बचत (S_{18}=9[100+17(20)]=3960) है। परीक्षा में दैनिक वृद्धि को सार्व अंतर मानें।

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एक सभागार में पहली पंक्ति में (22) सीटें हैं और हर अगली पंक्ति में (3) सीटें अधिक हैं। यदि (25) पंक्तियाँ हैं तो कुल सीटें कितनी होंगी?

In an auditorium the first row has (22) seats and each next row has (3) more seats. If there are (25) rows, how many seats are there in total?

Explanation opens after your attempt
Correct Answer

A. (1450)

Step 1

Concept

Total seats are (S_{25}=\frac{25}{2}[44+24(3)]=1450). Exam tip: convert real-life situations into an AP.

Step 2

Why this answer is correct

The correct answer is A. (1450). Total seats are (S_{25}=\frac{25}{2}[44+24(3)]=1450). Exam tip: convert real-life situations into an AP.

Step 3

Exam Tip

कुल सीटें (S_{25}=\frac{25}{2}[44+24(3)]=1450) हैं। परीक्षा में वास्तविक जीवन प्रश्नों को समान्तर श्रेणी में बदलें।

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एक विद्यालय में पहले सप्ताह (35) पौधे लगाए गए और हर अगले सप्ताह (8) पौधे अधिक लगाए गए। (16) सप्ताहों में कुल कितने पौधे लगेंगे?

In a school (35) plants were planted in the first week and (8) more plants were planted each next week. How many plants will be planted in (16) weeks?

Explanation opens after your attempt
Correct Answer

B. (1520)

Step 1

Concept

Total plants are (S_{16}=8[70+15(8)]=1520). Exam tip: treat the weekly increase as the common difference.

Step 2

Why this answer is correct

The correct answer is B. (1520). Total plants are (S_{16}=8[70+15(8)]=1520). Exam tip: treat the weekly increase as the common difference.

Step 3

Exam Tip

कुल पौधे (S_{16}=8[70+15(8)]=1520) हैं। परीक्षा में साप्ताहिक वृद्धि को सार्व अंतर मानें।

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एक सीढ़ी में सबसे नीचे (45) ईंटें हैं और हर ऊपर वाली पंक्ति में (3) ईंटें कम हैं। (12) पंक्तियों में कुल कितनी ईंटें होंगी?

A stair pattern has (45) bricks in the bottom row and (3) fewer bricks in each upper row. How many bricks are there in (12) rows?

Explanation opens after your attempt
Correct Answer

C. (342)

Step 1

Concept

This is the AP \(45,42,39,\ldots\), and (S_{12}=6[90+11(-3)]=342). Exam tip: treat the decrease as a negative common difference.

Step 2

Why this answer is correct

The correct answer is C. (342). This is the AP \(45,42,39,\ldots\), and (S_{12}=6[90+11(-3)]=342). Exam tip: treat the decrease as a negative common difference.

Step 3

Exam Tip

यह \(45,42,39,\ldots\) श्रेणी है और (S_{12}=6[90+11(-3)]=342)। परीक्षा में कमी को ऋणात्मक सार्व अंतर मानें।

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एक सभागार में पंक्तियों की सीटें \(40,48,56,\ldots\) हैं। (30)वीं पंक्ति से (75)वीं पंक्ति तक कुल सीटें कितनी होंगी?

In an auditorium, the seats in rows are \(40,48,56,\ldots\). How many seats are there from the (30)th row to the (75)th row?

Explanation opens after your attempt
Correct Answer

C. (20792)

Step 1

Concept

The total seats are \(S_{75}-S_{29}=20792\). To exclude earlier rows, subtract their sum.

Step 2

Why this answer is correct

The correct answer is C. (20792). The total seats are \(S_{75}-S_{29}=20792\). To exclude earlier rows, subtract their sum.

Step 3

Exam Tip

कुल सीटें \(S_{75}-S_{29}=20792\) हैं। शुरुआती पंक्तियों को हटाने के लिए उनका योग घटाएँ।

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एक बचत योजना में पहले महीने (5000) रुपये और हर अगले महीने (350) रुपये अधिक जमा किए जाते हैं। (36) महीनों में कुल जमा राशि कितनी होगी?

In a saving plan, (5000) rupees are deposited in the first month and (350) rupees more every next month. What is the total deposit in (36) months?

Explanation opens after your attempt
Correct Answer

C. (400500)

Step 1

Concept

This is an AP with (a=5000), (d=350), (n=36), and the total is (400500). In word problems, treat each amount as a term.

Step 2

Why this answer is correct

The correct answer is C. (400500). This is an AP with (a=5000), (d=350), (n=36), and the total is (400500). In word problems, treat each amount as a term.

Step 3

Exam Tip

यह (a=5000), (d=350), (n=36) वाली AP है और कुल योग (400500) है। शब्द-प्रश्न में राशि को पद मानें।

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एक सभागार में पंक्तियों की सीटें \(30,36,42,\ldots\) हैं। (25)वीं पंक्ति से (50)वीं पंक्ति तक कुल सीटें कितनी होंगी?

In an auditorium, the seats in rows are \(30,36,42,\ldots\). How many seats are there from the (25)th row to the (50)th row?

Explanation opens after your attempt
Correct Answer

D. (6474)

Step 1

Concept

The total seats are \(S_{50}-S_{24}=6474\). To exclude earlier rows, subtract their sum.

Step 2

Why this answer is correct

The correct answer is D. (6474). The total seats are \(S_{50}-S_{24}=6474\). To exclude earlier rows, subtract their sum.

Step 3

Exam Tip

कुल सीटें \(S_{50}-S_{24}=6474\) हैं। शुरुआती पंक्तियों को हटाने के लिए उनका योग घटाएँ।

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एक बचत योजना में पहले महीने (3200) रुपये और हर अगले महीने (225) रुपये अधिक जमा किए जाते हैं। (30) महीनों में कुल जमा राशि कितनी होगी?

In a saving plan, (3200) rupees are deposited in the first month and (225) rupees more every next month. What is the total deposit in (30) months?

Explanation opens after your attempt
Correct Answer

C. (193875)

Step 1

Concept

This is an AP with (a=3200), (d=225), (n=30), and the total is (193875). In word problems, treat each amount as a term.

Step 2

Why this answer is correct

The correct answer is C. (193875). This is an AP with (a=3200), (d=225), (n=30), and the total is (193875). In word problems, treat each amount as a term.

Step 3

Exam Tip

यह (a=3200), (d=225), (n=30) वाली श्रेढ़ी है और कुल योग (193875) है। शब्द-प्रश्न में राशि को पद मानें।

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एक सभागार में पंक्तियों की सीटें \(25,30,35,\ldots\) हैं। (18)वीं पंक्ति से (42)वीं पंक्ति तक कुल सीटें कितनी होंगी?

In an auditorium, the seats in rows are \(25,30,35,\ldots\). How many seats are there from the (18)th row to the (42)nd row?

Explanation opens after your attempt
Correct Answer

B. (4250)

Step 1

Concept

The total seats are \(S_{42}-S_{17}=4250\). To exclude earlier rows, subtract their sum.

Step 2

Why this answer is correct

The correct answer is B. (4250). The total seats are \(S_{42}-S_{17}=4250\). To exclude earlier rows, subtract their sum.

Step 3

Exam Tip

कुल सीटें \(S_{42}-S_{17}=4250\) हैं। शुरुआती पंक्तियों को हटाने के लिए उनका योग घटाएँ।

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एक बचत योजना में पहले महीने (2200) रुपये और हर अगले महीने (175) रुपये अधिक जमा किए जाते हैं। (24) महीनों में कुल जमा राशि कितनी होगी?

In a saving plan, (2200) rupees are deposited in the first month and (175) rupees more every next month. What is the total deposit in (24) months?

Explanation opens after your attempt
Correct Answer

A. (101100)

Step 1

Concept

This is an AP with (a=2200), (d=175), (n=24), and the total is (101100). In word problems, treat each amount as a term.

Step 2

Why this answer is correct

The correct answer is A. (101100). This is an AP with (a=2200), (d=175), (n=24), and the total is (101100). In word problems, treat each amount as a term.

Step 3

Exam Tip

यह (a=2200), (d=175), (n=24) वाली श्रेढ़ी है और कुल योग (101100) है। शब्द-प्रश्न में राशि को पद मानें।

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एक सभागार में पंक्तियों की सीटें \(20,24,28,\ldots\) हैं। (15)वीं पंक्ति से (35)वीं पंक्ति तक कुल सीटें कितनी होंगी?

In an auditorium, the seats in rows are \(20,24,28,\ldots\). How many seats are there from the (15)th row to the (35)th row?

Explanation opens after your attempt
Correct Answer

B. (2436)

Step 1

Concept

The total seats are \(S_{35}-S_{14}=2436\). To exclude earlier rows, subtract their sum.

Step 2

Why this answer is correct

The correct answer is B. (2436). The total seats are \(S_{35}-S_{14}=2436\). To exclude earlier rows, subtract their sum.

Step 3

Exam Tip

कुल सीटें \(S_{35}-S_{14}=2436\) हैं। शुरुआती कुछ पंक्तियों को हटाने के लिए उनके योग को घटाएँ।

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एक बचत योजना में पहले महीने (1500) रुपये और हर अगले महीने (250) रुपये अधिक जमा किए जाते हैं। (18) महीनों में कुल जमा राशि कितनी होगी?

In a saving plan, (1500) rupees are deposited in the first month and (250) rupees more every next month. What is the total deposit in (18) months?

Explanation opens after your attempt
Correct Answer

A. (65250)

Step 1

Concept

This is an AP with (a=1500), (d=250), (n=18), and the total is (65250). In word problems, treat each amount as a term.

Step 2

Why this answer is correct

The correct answer is A. (65250). This is an AP with (a=1500), (d=250), (n=18), and the total is (65250). In word problems, treat each amount as a term.

Step 3

Exam Tip

यह (a=1500), (d=250), (n=18) वाली श्रेढ़ी है और कुल योग (65250) है। शब्द-प्रश्न में राशि को पद मानें।

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एक छात्र प्रतिदिन (15) मिनट से शुरू करके हर दिन (5) मिनट अधिक अभ्यास करता है। (14) दिनों में कुल अभ्यास समय कितना होगा?

A student starts with (15) minutes of practice per day and increases it by (5) minutes every day. What is the total practice time in (14) days?

Explanation opens after your attempt
Correct Answer

C. (665)

Step 1

Concept

This is the AP \(15,20,25,\ldots\), and the sum for (14) days is (665) minutes. In word problems, treat days as the number of terms.

Step 2

Why this answer is correct

The correct answer is C. (665). This is the AP \(15,20,25,\ldots\), and the sum for (14) days is (665) minutes. In word problems, treat days as the number of terms.

Step 3

Exam Tip

यह \(15,20,25,\ldots\) श्रेढ़ी है और (14) दिनों का योग (665) मिनट है। शब्द-प्रश्न में दिन को पदों की संख्या मानें।

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एक सीढ़ी में डंडों की लंबाइयाँ \(40,43,46,\ldots\) सेंटीमीटर हैं। पहले (15) डंडों की कुल लंबाई क्या होगी?

The lengths of rods in a ladder are \(40,43,46,\ldots\) cm. What is the total length of the first (15) rods?

Explanation opens after your attempt
Correct Answer

B. (915)

Step 1

Concept

Putting (a=40), (d=3), (n=15), the sum is (915) cm. Keep the unit in mind in the answer.

Step 2

Why this answer is correct

The correct answer is B. (915). Putting (a=40), (d=3), (n=15), the sum is (915) cm. Keep the unit in mind in the answer.

Step 3

Exam Tip

(a=40), (d=3), (n=15) रखने पर योग (915) सेंटीमीटर है। इकाई को उत्तर में ध्यान रखें।

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एक कारखाने में रोज उत्पादन \(120,135,150,\ldots\) वस्तुओं का है। (10) दिनों में कुल उत्पादन कितना होगा?

A factory produces \(120,135,150,\ldots\) items per day. What is the total production in (10) days?

Explanation opens after your attempt
Correct Answer

A. (1875)

Step 1

Concept

The production forms an AP, and \(S_{10}=1875\). Treat the daily increase as the common difference.

Step 2

Why this answer is correct

The correct answer is A. (1875). The production forms an AP, and \(S_{10}=1875\). Treat the daily increase as the common difference.

Step 3

Exam Tip

यह उत्पादन समांतर श्रेढ़ी बनाता है और \(S_{10}=1875\) है। दैनिक वृद्धि को सार्व अंतर मानें।

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एक बचत योजना में रवि पहले महीने (500) रुपये और हर अगले महीने (100) रुपये अधिक जमा करता है। (12) महीनों में कुल जमा राशि कितनी होगी?

In a saving plan, Ravi deposits (500) rupees in the first month and (100) rupees more each next month. What is the total deposit in (12) months?

Explanation opens after your attempt
Correct Answer

A. (12600)

Step 1

Concept

This is an AP with (a=500), (d=100), (n=12), and the total is (12600). In real-life questions, treat each amount as a term.

Step 2

Why this answer is correct

The correct answer is A. (12600). This is an AP with (a=500), (d=100), (n=12), and the total is (12600). In real-life questions, treat each amount as a term.

Step 3

Exam Tip

यह (a=500), (d=100), (n=12) वाली श्रेढ़ी है और कुल योग (12600) है। वास्तविक जीवन प्रश्नों में राशि को पद मानें।

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एक सभागार की पंक्तियों में सीटों की संख्या \(18,21,24,\ldots\) है। पहली (16) पंक्तियों में कुल सीटें कितनी होंगी?

The numbers of seats in rows of an auditorium are \(18,21,24,\ldots\). How many seats are there in the first (16) rows?

Explanation opens after your attempt
Correct Answer

C. (648)

Step 1

Concept

This is an AP with (a=18), (d=3), (n=16), and the sum is (648). In word problems, identify (a,d,n) first.

Step 2

Why this answer is correct

The correct answer is C. (648). This is an AP with (a=18), (d=3), (n=16), and the sum is (648). In word problems, identify (a,d,n) first.

Step 3

Exam Tip

यह (a=18), (d=3), (n=16) वाली समांतर श्रेढ़ी है और योग (648) है। शब्द-प्रश्न में पहले (a,d,n) पहचानें।

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एक निर्माण कार्य में ईंटों की पंक्तियाँ \(25,37,49,\ldots\) के क्रम में लगती हैं। पहले (18) पंक्तियों में कुल कितनी ईंटें लगेंगी?

In a construction work, rows of bricks follow \(25,37,49,\ldots\). How many bricks will be used in the first (18) rows?

Explanation opens after your attempt
Correct Answer

D. (2286)

Step 1

Concept

The eighteenth row has (229) bricks, so the total is (S_{18}=\frac{18}{2}(25+229)=2286). In word problems, convert the pattern into an arithmetic progression.

Step 2

Why this answer is correct

The correct answer is D. (2286). The eighteenth row has (229) bricks, so the total is (S_{18}=\frac{18}{2}(25+229)=2286). In word problems, convert the pattern into an arithmetic progression.

Step 3

Exam Tip

अठारहवीं पंक्ति में (229) ईंटें हैं, इसलिए कुल (S_{18}=\frac{18}{2}(25+229)=2286) है। शब्द-प्रश्न में क्रम को समांतर श्रेणी में बदलें।

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एक मैदान में कुर्सियों की पंक्तियाँ \(80,115,150,\ldots\) के क्रम में हैं। पहले (10) पंक्तियों में कुल कितनी कुर्सियाँ होंगी?

In a ground, rows of chairs follow \(80,115,150,\ldots\). How many chairs will there be in the first (10) rows?

Explanation opens after your attempt
Correct Answer

C. (2375)

Step 1

Concept

The tenth row has (395) chairs, so the total is (S_{10}=\frac{10}{2}(80+395)=2375). Treat rows as the number of terms.

Step 2

Why this answer is correct

The correct answer is C. (2375). The tenth row has (395) chairs, so the total is (S_{10}=\frac{10}{2}(80+395)=2375). Treat rows as the number of terms.

Step 3

Exam Tip

दसवीं पंक्ति में (395) कुर्सियाँ हैं, इसलिए कुल (S_{10}=\frac{10}{2}(80+395)=2375) है। पंक्तियों को पदों की संख्या मानें।

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एक बचत योजना में हर महीने जमा राशि \(45,65,85,\ldots\) रुपये है। पहले (12) महीनों में कुल बचत कितनी होगी?

In a savings plan, the monthly deposit is \(45,65,85,\ldots\) rupees. What will be the total saving in the first (12) months?

Explanation opens after your attempt
Correct Answer

B. (1860)

Step 1

Concept

The twelfth deposit is (265) rupees, so the total is (S_{12}=\frac{12}{2}(45+265)=1860) rupees. Keep the unit in mind in money questions.

Step 2

Why this answer is correct

The correct answer is B. (1860). The twelfth deposit is (265) rupees, so the total is (S_{12}=\frac{12}{2}(45+265)=1860) rupees. Keep the unit in mind in money questions.

Step 3

Exam Tip

बारहवाँ जमा (265) रुपये है, इसलिए कुल (S_{12}=\frac{12}{2}(45+265)=1860) रुपये है। राशि वाले प्रश्न में इकाई ध्यान रखें।

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एक निर्माण कार्य में ईंटों की पंक्तियाँ \(24,31,38,\ldots\) के क्रम में लगती हैं। पहले (18) पंक्तियों में कुल कितनी ईंटें लगेंगी?

In a construction work, rows of bricks follow \(24,31,38,\ldots\). How many bricks will be used in the first (18) rows?

Explanation opens after your attempt
Correct Answer

D. (1503)

Step 1

Concept

The eighteenth row has (143) bricks, so the total is (S_{18}=\frac{18}{2}(24+143)=1503). In word problems, treat rows as terms.

Step 2

Why this answer is correct

The correct answer is D. (1503). The eighteenth row has (143) bricks, so the total is (S_{18}=\frac{18}{2}(24+143)=1503). In word problems, treat rows as terms.

Step 3

Exam Tip

अठारहवीं पंक्ति में (143) ईंटें हैं, इसलिए कुल (S_{18}=\frac{18}{2}(24+143)=1503) है। शब्द-प्रश्न में पंक्तियों को पद मानें।

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एक पुस्तकालय में नई किताबें हर सप्ताह \(30,45,60,\ldots\) की संख्या में आती हैं। पहले (12) सप्ताहों में कुल कितनी किताबें आएँगी?

In a library, new books arrive each week in numbers \(30,45,60,\ldots\). How many books will arrive in the first (12) weeks?

Explanation opens after your attempt
Correct Answer

D. (1350)

Step 1

Concept

In the twelfth week, (195) books arrive, so the total is (1350) books. Treat the pattern as (a=30), (d=15), (n=12).

Step 2

Why this answer is correct

The correct answer is D. (1350). In the twelfth week, (195) books arrive, so the total is (1350) books. Treat the pattern as (a=30), (d=15), (n=12).

Step 3

Exam Tip

बारहवें सप्ताह में (195) किताबें आएँगी, इसलिए कुल (1350) किताबें हैं। क्रम को (a=30), (d=15), (n=12) मानें।

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एक बचत योजना में जमा राशि \(150,225,300,\ldots\) रुपये है। पहले (10) महीनों की कुल बचत कितनी होगी?

In a savings plan, the deposits are \(150,225,300,\ldots\) rupees. What is the total saving in the first (10) months?

Explanation opens after your attempt
Correct Answer

B. (4875)

Step 1

Concept

The tenth deposit is (825) rupees, so the total is (S_{10}=\frac{10}{2}(150+825)=4875) rupees. Do not forget the unit in money problems.

Step 2

Why this answer is correct

The correct answer is B. (4875). The tenth deposit is (825) rupees, so the total is (S_{10}=\frac{10}{2}(150+825)=4875) rupees. Do not forget the unit in money problems.

Step 3

Exam Tip

दसवाँ जमा (825) रुपये है, इसलिए कुल (S_{10}=\frac{10}{2}(150+825)=4875) रुपये है। राशि वाले प्रश्न में इकाई न भूलें।

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एक पेड़ पर प्रतिदिन फल तोड़े गए: \(12,18,24,\ldots\)। पहले (15) दिनों में कुल कितने फल तोड़े गए?

Fruits plucked from a tree each day were \(12,18,24,\ldots\). How many fruits were plucked in the first (15) days?

Explanation opens after your attempt
Correct Answer

C. (810)

Step 1

Concept

The fifteenth term is (96), so the total is (S_{15}=\frac{15}{2}(12+96)=810) fruits. Treat the number of days as the number of terms.

Step 2

Why this answer is correct

The correct answer is C. (810). The fifteenth term is (96), so the total is (S_{15}=\frac{15}{2}(12+96)=810) fruits. Treat the number of days as the number of terms.

Step 3

Exam Tip

पंद्रहवाँ पद (96) है, इसलिए कुल (S_{15}=\frac{15}{2}(12+96)=810) फल हैं। दिनों की संख्या को पदों की संख्या मानें।

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एक थिएटर में सीटों की पंक्तियाँ \(18,22,26,\ldots\) के क्रम में हैं। पहले (16) पंक्तियों में कुल कितनी सीटें होंगी?

In a theatre, rows of seats follow \(18,22,26,\ldots\). How many seats will there be in the first (16) rows?

Explanation opens after your attempt
Correct Answer

A. (768)

Step 1

Concept

The sixteenth row has (78) seats, so the total is (S_{16}=\frac{16}{2}(18+78)=768). In word problems, treat rows as terms.

Step 2

Why this answer is correct

The correct answer is A. (768). The sixteenth row has (78) seats, so the total is (S_{16}=\frac{16}{2}(18+78)=768). In word problems, treat rows as terms.

Step 3

Exam Tip

सोलहवीं पंक्ति में (78) सीटें हैं, इसलिए कुल (S_{16}=\frac{16}{2}(18+78)=768)। शब्द-प्रश्न में पंक्तियों को पद मानें।

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एक दुकान में पैकेट \(7,14,21,\ldots\) की संख्या में रखे गए हैं। पहले (9) शेल्फों में कुल कितने पैकेट होंगे?

In a shop, packets are arranged in the numbers \(7,14,21,\ldots\). How many packets will there be in the first (9) shelves?

Explanation opens after your attempt
Correct Answer

B. (315)

Step 1

Concept

This is the sum of the first (9) multiples of (7), so \(7\times45=315\). Treat the number of shelves as the number of terms.

Step 2

Why this answer is correct

The correct answer is B. (315). This is the sum of the first (9) multiples of (7), so \(7\times45=315\). Treat the number of shelves as the number of terms.

Step 3

Exam Tip

यह (7) के पहले (9) गुणजों का योग है, इसलिए \(7\times45=315\)। शेल्फों की संख्या को पदों की संख्या मानें।

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एक पौधारोपण अभियान में पौधे \(6,11,16,\ldots\) के क्रम में लगाए जाते हैं। पहले (10) दिनों में कुल कितने पौधे लगाए जाएँगे?

In a plantation campaign, plants are planted in the pattern \(6,11,16,\ldots\). How many plants will be planted in the first (10) days?

Explanation opens after your attempt
Correct Answer

B. (285)

Step 1

Concept

The tenth term is (51), so the total is (S_{10}=\frac{10}{2}(6+51)=285) plants. The same sum formula works in real situations.

Step 2

Why this answer is correct

The correct answer is B. (285). The tenth term is (51), so the total is (S_{10}=\frac{10}{2}(6+51)=285) plants. The same sum formula works in real situations.

Step 3

Exam Tip

दसवाँ पद (51) है, इसलिए कुल (S_{10}=\frac{10}{2}(6+51)=285) पौधे होंगे। वास्तविक स्थितियों में भी योग सूत्र वही रहता है।

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एक सीढ़ी में ईंटों की संख्या \(5,10,15,\ldots\) के क्रम में बढ़ती है। पहले (9) स्तरों में कुल कितनी ईंटें लगेंगी?

In a staircase, the number of bricks increases as \(5,10,15,\ldots\). How many bricks will be used in the first (9) levels?

Explanation opens after your attempt
Correct Answer

B. (225)

Step 1

Concept

This is the sum of the first (9) multiples of (5), so \(5\times45=225\). In word problems, treat levels as terms.

Step 2

Why this answer is correct

The correct answer is B. (225). This is the sum of the first (9) multiples of (5), so \(5\times45=225\). In word problems, treat levels as terms.

Step 3

Exam Tip

यह (5) के पहले (9) गुणजों का योग है, इसलिए \(5\times45=225\)। शब्द-प्रश्न में स्तरों को पद मानें।

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एक बचत योजना में हर महीने जमा राशि \(200,250,300,\ldots\) रुपये है। पहले (8) महीनों की कुल राशि कितनी होगी?

In a savings plan, the monthly deposit is \(200,250,300,\ldots\) rupees. What is the total amount for the first (8) months?

Explanation opens after your attempt
Correct Answer

B. (3000)

Step 1

Concept

Here (a=200), (d=50), and (n=8), so the total is (3000) rupees. In money questions, keep the unit in mind.

Step 2

Why this answer is correct

The correct answer is B. (3000). Here (a=200), (d=50), and (n=8), so the total is (3000) rupees. In money questions, keep the unit in mind.

Step 3

Exam Tip

यहाँ (a=200), (d=50), (n=8) है, इसलिए कुल (3000) रुपये होंगे। राशि वाले प्रश्न में इकाई भी लिखें।

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एक विद्यार्थी प्रतिदिन \(4,8,12,\ldots\) अभ्यास प्रश्न हल करता है। पहले (10) दिनों में कुल कितने प्रश्न हल होंगे?

A student solves \(4,8,12,\ldots\) practice questions per day. How many questions will be solved in the first (10) days?

Explanation opens after your attempt
Correct Answer

C. (220)

Step 1

Concept

This is the sum of the first (10) multiples of (4), so the total is (220) questions. Treat the number of days as (n).

Step 2

Why this answer is correct

The correct answer is C. (220). This is the sum of the first (10) multiples of (4), so the total is (220) questions. Treat the number of days as (n).

Step 3

Exam Tip

यह (4) के पहले (10) गुणजों का योग है, इसलिए कुल (220) प्रश्न होंगे। दिनों की संख्या को (n) मानें।

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