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add-n-plus-two MCQ Questions for Class 9

add-n-plus-two se related questions ko ek jagah revise karein. Har question me bilingual content, answer feedback aur explanation available hai.

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2 questions tagged with add-n-plus-two.

Question 1/2 Medium Mathematics Sequences and Progressions Recursive rule Class 9 Level 44

यदि \(a_1=6\) और \(a_{n+1}=a_n+n+2\) है तो \(a_5\) का मान क्या होगा?

If \(a_1=6\) and \(a_{n+1}=a_n+n+2\), what is the value of \(a_5\)?

Explanation opens after your attempt
Correct Answer

D. (24)

Step 1

Concept

The terms are (6,9,13,18,24), so \(a_5=24\). Exam tip: add the changing values of (n+2).

Step 2

Why this answer is correct

The correct answer is D. (24). The terms are (6,9,13,18,24), so \(a_5=24\). Exam tip: add the changing values of (n+2).

Step 3

Exam Tip

पद (6,9,13,18,24) हैं इसलिए \(a_5=24\) है। (n+2) के बदलते मान जोड़ें।

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Question 2/2 Easy Mathematics Sequences and Progressions Recursive rule Class 9 Level 49

यदि \(a_1=10\) और \(a_{n+1}=a_n+n+2\) है तो \(a_3\) क्या होगा?

If \(a_1=10\) and \(a_{n+1}=a_n+n+2\), what is \(a_3\)?

Explanation opens after your attempt
Correct Answer

C. (17)

Step 1

Concept

The terms are (10,13,17), so \(a_3=17\). Exam tip: (n+2) changes at each step.

Step 2

Why this answer is correct

The correct answer is C. (17). The terms are (10,13,17), so \(a_3=17\). Exam tip: (n+2) changes at each step.

Step 3

Exam Tip

पद (10,13,17) हैं इसलिए \(a_3=17\) है। (n+2) हर चरण में बदलता है।

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