यदि \(a_n=63-5n\) है, तो \(a_4+a_9\) का मान क्या है?

If \(a_n=63-5n\), what is the value of \(a_4+a_9\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (81)

Step 1

Concept

\(a_4=43\) and \(a_9=18\), so the sum is (61). The correct option should include (61).

Step 2

Why this answer is correct

The correct answer is B. (81). \(a_4=43\) and \(a_9=18\), so the sum is (61). The correct option should include (61).

Step 3

Exam Tip

\(a_4=43\) और \(a_9=18\), इसलिए योग (61) नहीं बल्कि (61) है। सही विकल्पों में (61) होना चाहिए।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_n=63-5n\) है, तो \(a_4+a_9\) का मान क्या है? / If \(a_n=63-5n\), what is the value of \(a_4+a_9\)?

Correct Answer: B. (81). Explanation: \(a_4=43\) और \(a_9=18\), इसलिए योग (61) नहीं बल्कि (61) है। सही विकल्पों में (61) होना चाहिए। / \(a_4=43\) and \(a_9=18\), so the sum is (61). The correct option should include (61).

Which concept should I revise for this Mathematics MCQ?

\(a_4=43\) and \(a_9=18\), so the sum is (61). The correct option should include (61).

What exam hint can help solve this Mathematics question?

\(a_4=43\) और \(a_9=18\), इसलिए योग (61) नहीं बल्कि (61) है। सही विकल्पों में (61) होना चाहिए।