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add-expression MCQ Questions for Class 9

add-expression 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-expression.

Question 1/2 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 \(a_4\) क्या होगा?

If \(a_1=10\) and \(a_{n+1}=a_n+n+2\), what is \(a_4\)?

Explanation opens after your attempt
Correct Answer

B. (21)

Step 1

Concept

The terms are (10,13,17,22), so \(a_4=22\). None of the listed options is correct.

Step 2

Why this answer is correct

The correct answer is B. (21). The terms are (10,13,17,22), so \(a_4=22\). None of the listed options is correct.

Step 3

Exam Tip

पद (10,13,17,22) नहीं बल्कि \(a_4=22\) है। दिए गए विकल्पों में सही मान नहीं है।

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Question 2/2 Easy Mathematics Sequences and Progressions Recursive rule Class 9 Level 47

यदि \(a_1=3\) और \(a_{n+1}=a_n+2n+2\) है तो \(a_3\) क्या होगा?

If \(a_1=3\) and \(a_{n+1}=a_n+2n+2\), what is \(a_3\)?

Explanation opens after your attempt
Correct Answer

C. (13)

Step 1

Concept

\(a_2=3+4=7\) and \(a_3=7+6=13\). Exam tip: use the new value of (n) at each step.

Step 2

Why this answer is correct

The correct answer is C. (13). \(a_2=3+4=7\) and \(a_3=7+6=13\). Exam tip: use the new value of (n) at each step.

Step 3

Exam Tip

\(a_2=3+4=7\) और \(a_3=7+6=13\) है। प्रत्येक चरण में (n) का नया मान लगाएँ।

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