यदि \(a_1=5\) और पहले (6) पदों का योग (120) है, तो समान अंतर क्या है?

If \(a_1=5\) and the sum of the first (6) terms is (120), what is the common difference?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (6)

Step 1

Concept

(\frac{6}{2}[2(5)+5d]=120) gives (30+15d=120) and (d=6). In sum questions, substitute (n) and (a) first.

Step 2

Why this answer is correct

The correct answer is C. (6). (\frac{6}{2}[2(5)+5d]=120) gives (30+15d=120) and (d=6). In sum questions, substitute (n) and (a) first.

Step 3

Exam Tip

(\frac{6}{2}[2(5)+5d]=120) से (30+15d=120) और (d=6)। योग वाले प्रश्न में पहले (n) और (a) रखें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=5\) और पहले (6) पदों का योग (120) है, तो समान अंतर क्या है? / If \(a_1=5\) and the sum of the first (6) terms is (120), what is the common difference?

Correct Answer: C. (6). Explanation: (\frac{6}{2}[2(5)+5d]=120) से (30+15d=120) और (d=6)। योग वाले प्रश्न में पहले (n) और (a) रखें। / (\frac{6}{2}[2(5)+5d]=120) gives (30+15d=120) and (d=6). In sum questions, substitute (n) and (a) first.

Which concept should I revise for this Mathematics MCQ?

(\frac{6}{2}[2(5)+5d]=120) gives (30+15d=120) and (d=6). In sum questions, substitute (n) and (a) first.

What exam hint can help solve this Mathematics question?

(\frac{6}{2}[2(5)+5d]=120) से (30+15d=120) और (d=6)। योग वाले प्रश्न में पहले (n) और (a) रखें।