Concept-wise Practice

cube-increment MCQ Questions for Class 9

cube-increment se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

Practice Questions

1 questions tagged with cube-increment.

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

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

Explanation opens after your attempt
Correct Answer

A. (103)

Step 1

Concept

The cube additions are (1,8,27,64), so \(a_5=103\). Exam tip: add the new value of \(n^3\) at each step.

Step 2

Why this answer is correct

The correct answer is A. (103). The cube additions are (1,8,27,64), so \(a_5=103\). Exam tip: add the new value of \(n^3\) at each step.

Step 3

Exam Tip

घन जोड़ (1,8,27,64) हैं इसलिए \(a_5=103\) है। हर चरण में \(n^3\) का नया मान जोड़ें।

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