यदि समानांतर श्रेढ़ी का पहला पद (21) और चौथा पद (36) है, तो समान अंतर क्या है?

If the first term of an arithmetic progression is (21) and the fourth term is (36), what is the common difference?

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Correct Answer

C. (5)

Step 1

Concept

From \(a_4=21+3d=36\), (3d=15) and (d=5). Up to the fourth term, there are three gaps.

Step 2

Why this answer is correct

The correct answer is C. (5). From \(a_4=21+3d=36\), (3d=15) and (d=5). Up to the fourth term, there are three gaps.

Step 3

Exam Tip

\(a_4=21+3d=36\) से (3d=15) और (d=5)। चौथे पद तक तीन अंतर होते हैं।

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यदि समानांतर श्रेढ़ी का पहला पद (21) और चौथा पद (36) है, तो समान अंतर क्या है? / If the first term of an arithmetic progression is (21) and the fourth term is (36), what is the common difference?

Correct Answer: C. (5). Explanation: \(a_4=21+3d=36\) से (3d=15) और (d=5)। चौथे पद तक तीन अंतर होते हैं। / From \(a_4=21+3d=36\), (3d=15) and (d=5). Up to the fourth term, there are three gaps.

Which concept should I revise for this Mathematics MCQ?

From \(a_4=21+3d=36\), (3d=15) and (d=5). Up to the fourth term, there are three gaps.

What exam hint can help solve this Mathematics question?

\(a_4=21+3d=36\) से (3d=15) और (d=5)। चौथे पद तक तीन अंतर होते हैं।