यदि \(a_1=100\) और (a_{n+1}=a_n-(n+1)2) है तो \(a_4\) क्या होगा?

If \(a_1=100\) and (a_{n+1}=a_n-(n+1)2), what is \(a_4\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (71)

Step 1

Concept

The subtracted squares are (4,9,16), so (100-29=71). Exam tip: subtract squares in order.

Step 2

Why this answer is correct

The correct answer is C. (71). The subtracted squares are (4,9,16), so (100-29=71). Exam tip: subtract squares in order.

Step 3

Exam Tip

घटने वाले वर्ग (4,9,16) हैं इसलिए (100-29=71) है। वर्गों को क्रम से घटाएँ।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=100\) और (a_{n+1}=a_n-(n+1)2) है तो \(a_4\) क्या होगा? / If \(a_1=100\) and (a_{n+1}=a_n-(n+1)2), what is \(a_4\)?

Correct Answer: C. (71). Explanation: घटने वाले वर्ग (4,9,16) हैं इसलिए (100-29=71) है। वर्गों को क्रम से घटाएँ। / The subtracted squares are (4,9,16), so (100-29=71). Exam tip: subtract squares in order.

Which concept should I revise for this Mathematics MCQ?

The subtracted squares are (4,9,16), so (100-29=71). Exam tip: subtract squares in order.

What exam hint can help solve this Mathematics question?

घटने वाले वर्ग (4,9,16) हैं इसलिए (100-29=71) है। वर्गों को क्रम से घटाएँ।