यदि \(a_1=150\) और \(a_{n+1}=a_n-n^3\) है तो \(a_5\) क्या होगा?

If \(a_1=150\) and \(a_{n+1}=a_n-n^3\), what is \(a_5\)?

Author: Muft Shiksha Editorial Team Published: Updated:
Explanation opens after your attempt
Correct Answer

B. (50)

Step 1

Concept

The subtracted cubes are (1,8,27,64), so \(a_5=50\). Exam tip: find the sum of cubes first.

Step 2

Why this answer is correct

The correct answer is B. (50). The subtracted cubes are (1,8,27,64), so \(a_5=50\). Exam tip: find the sum of cubes first.

Step 3

Exam Tip

घटने वाले घन (1,8,27,64) हैं इसलिए \(a_5=50\) है। घनों का योग पहले निकालें।

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Mathematics Answer, Explanation and Revision Hints

यदि \(a_1=150\) और \(a_{n+1}=a_n-n^3\) है तो \(a_5\) क्या होगा? / If \(a_1=150\) and \(a_{n+1}=a_n-n^3\), what is \(a_5\)?

Correct Answer: B. (50). Explanation: घटने वाले घन (1,8,27,64) हैं इसलिए \(a_5=50\) है। घनों का योग पहले निकालें। / The subtracted cubes are (1,8,27,64), so \(a_5=50\). Exam tip: find the sum of cubes first.

Which concept should I revise for this Mathematics MCQ?

The subtracted cubes are (1,8,27,64), so \(a_5=50\). Exam tip: find the sum of cubes first.

What exam hint can help solve this Mathematics question?

घटने वाले घन (1,8,27,64) हैं इसलिए \(a_5=50\) है। घनों का योग पहले निकालें।