एक समान्तर श्रेणी में \(a_{29}=a_{12}+255\) और \(a_{12}=86\) है। \(a_{72}\) क्या होगा?

In an AP \(a_{29}=a_{12}+255\) and \(a_{12}=86\). What is \(a_{72}\)?

Explanation opens after your attempt
Correct Answer

B. (986)

Step 1

Concept

(17d=255), so (d=15). \(a_{72}=a_{12}+60d=86+900=986\).

Step 2

Why this answer is correct

The correct answer is B. (986). (17d=255), so (d=15). \(a_{72}=a_{12}+60d=86+900=986\).

Step 3

Exam Tip

(17d=255), इसलिए (d=15)। \(a_{72}=a_{12}+60d=86+900=986\)।

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Mathematics Answer, Explanation and Revision Hints

एक समान्तर श्रेणी में \(a_{29}=a_{12}+255\) और \(a_{12}=86\) है। \(a_{72}\) क्या होगा? / In an AP \(a_{29}=a_{12}+255\) and \(a_{12}=86\). What is \(a_{72}\)?

Correct Answer: B. (986). Explanation: (17d=255), इसलिए (d=15)। \(a_{72}=a_{12}+60d=86+900=986\)। / (17d=255), so (d=15). \(a_{72}=a_{12}+60d=86+900=986\).

Which concept should I revise for this Mathematics MCQ?

(17d=255), so (d=15). \(a_{72}=a_{12}+60d=86+900=986\).

What exam hint can help solve this Mathematics question?

(17d=255), इसलिए (d=15)। \(a_{72}=a_{12}+60d=86+900=986\)।