यदि \(a_1=150\) और (a_{n+1}=a_n-\(2^n+n^2\)) है तो \(a_5\) क्या होगा?

If \(a_1=150\) and (a_{n+1}=a_n-\(2^n+n^2\)), what is \(a_5\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

A. (100)

Step 1

Concept

The subtracted values are (3,8,17,32), so \(a_5=90\). Exam tip: add all subtractions before subtracting.

Step 2

Why this answer is correct

The correct answer is A. (100). The subtracted values are (3,8,17,32), so \(a_5=90\). Exam tip: add all subtractions before subtracting.

Step 3

Exam Tip

घटने वाले मान (3,8,17,32) हैं इसलिए \(a_5=90\) नहीं बल्कि (90) है। सही विकल्पों में (90) होना चाहिए।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=150\) और (a_{n+1}=a_n-\(2^n+n^2\)) है तो \(a_5\) क्या होगा? / If \(a_1=150\) and (a_{n+1}=a_n-\(2^n+n^2\)), what is \(a_5\)?

Correct Answer: A. (100). Explanation: घटने वाले मान (3,8,17,32) हैं इसलिए \(a_5=90\) नहीं बल्कि (90) है। सही विकल्पों में (90) होना चाहिए। / The subtracted values are (3,8,17,32), so \(a_5=90\). Exam tip: add all subtractions before subtracting.

Which concept should I revise for this Mathematics MCQ?

The subtracted values are (3,8,17,32), so \(a_5=90\). Exam tip: add all subtractions before subtracting.

What exam hint can help solve this Mathematics question?

घटने वाले मान (3,8,17,32) हैं इसलिए \(a_5=90\) नहीं बल्कि (90) है। सही विकल्पों में (90) होना चाहिए।