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backward MCQ Questions for Class 10

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

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4 questions tagged with backward.

Question 1/4 Medium Mathematics Arithmetic Progressions (AP) Finding the $n$th term of an AP Class 10 Level 65

एक समान्तर श्रेणी में \(a_{11}=40\) और \(a_{19}=72\) है। \(a_4\) क्या होगा?

In an AP, \(a_{11}=40\) and \(a_{19}=72\). What is \(a_4\)?

Explanation opens after your attempt
Correct Answer

C. (12)

Step 1

Concept

\(d=\frac{72-40}{8}=4\) and \(a_4=40-7\times4=12\). When moving backward from a known term, subtract (d).

Step 2

Why this answer is correct

The correct answer is C. (12). \(d=\frac{72-40}{8}=4\) and \(a_4=40-7\times4=12\). When moving backward from a known term, subtract (d).

Step 3

Exam Tip

\(d=\frac{72-40}{8}=4\) और \(a_4=40-7\times4=12\)। ज्ञात पद से पीछे जाने पर (d) घटाते जाएं।

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Question 2/4 Medium Mathematics Arithmetic Progressions (AP) Finding the $n$th term of an AP Class 10 Level 65

यदि किसी समान्तर श्रेणी में \(a_{16}=91\) और (d=6) है तो \(a_3\) क्या होगा?

If in an AP \(a_{16}=91\) and (d=6), what is \(a_3\)?

Explanation opens after your attempt
Correct Answer

D. (19)

Step 1

Concept

\(a_3=a_{16}-13d=91-78=13\). While moving backward, multiply the position gap by (d) and subtract.

Step 2

Why this answer is correct

The correct answer is D. (19). \(a_3=a_{16}-13d=91-78=13\). While moving backward, multiply the position gap by (d) and subtract.

Step 3

Exam Tip

\(a_3=a_{16}-13d=91-78=13\)। पीछे जाते समय स्थानों के अंतर को (d) से गुणा करके घटाएं।

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Question 3/4 Medium Mathematics Arithmetic Progressions (AP) Finding the $n$th term of an AP Class 10 Level 64

एक समान्तर श्रेणी में \(a_{10}=31\) और \(a_{18}=55\) है। \(a_6\) क्या होगा?

In an AP, \(a_{10}=31\) and \(a_{18}=55\). What is \(a_6\)?

Explanation opens after your attempt
Correct Answer

B. (19)

Step 1

Concept

\(d=\frac{55-31}{8}=3\), so \(a_6=31-4\times3=19\). When moving backward from a known term, subtract (d).

Step 2

Why this answer is correct

The correct answer is B. (19). \(d=\frac{55-31}{8}=3\), so \(a_6=31-4\times3=19\). When moving backward from a known term, subtract (d).

Step 3

Exam Tip

\(d=\frac{55-31}{8}=3\), इसलिए \(a_6=31-4\times3=19\)। ज्ञात पद से पीछे आने पर (d) घटाएं।

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Question 4/4 Medium Mathematics Arithmetic Progressions (AP) Finding the $n$th term of an AP Class 10 Level 64

यदि किसी समान्तर श्रेणी का (11)वां पद (52) और (d=5) है, तो \(a_2\) क्या होगा?

If the (11)th term of an AP is (52) and (d=5), what is \(a_2\)?

Explanation opens after your attempt
Correct Answer

A. (7)

Step 1

Concept

\(a_2=a_{11}-9d=52-45=7\). When moving backward from a known term, subtract the position gap times (d).

Step 2

Why this answer is correct

The correct answer is A. (7). \(a_2=a_{11}-9d=52-45=7\). When moving backward from a known term, subtract the position gap times (d).

Step 3

Exam Tip

\(a_2=a_{11}-9d=52-45=7\)। ज्ञात पद से पीछे आने पर स्थानों का अंतर गुणा करके घटाएं।

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