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double-plus-three MCQ Questions for Class 9

double-plus-three 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 double-plus-three.

Question 1/2 Medium Mathematics Sequences and Progressions Recursive rule Class 9 Level 45

यदि \(a_1=7\) और \(a_{n+1}=2a_n+3\) है तो \(a_3\) क्या होगा?

If \(a_1=7\) and \(a_{n+1}=2a_n+3\), what is \(a_3\)?

Explanation opens after your attempt
Correct Answer

D. (37)

Step 1

Concept

The terms are (7,17,37), so \(a_3=37\). Exam tip: double first and then add (3).

Step 2

Why this answer is correct

The correct answer is D. (37). The terms are (7,17,37), so \(a_3=37\). Exam tip: double first and then add (3).

Step 3

Exam Tip

पद (7,17,37) हैं इसलिए \(a_3=37\) है। पहले दोगुना करें फिर (3) जोड़ें।

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Question 2/2 Medium Mathematics Sequences and Progressions Recursive rule Class 9 Level 45

यदि \(a_1=7\) और \(a_{n+1}=2a_n+3\) है तो \(a_4\) क्या होगा?

If \(a_1=7\) and \(a_{n+1}=2a_n+3\), what is \(a_4\)?

Explanation opens after your attempt
Correct Answer

C. (69)

Step 1

Concept

The terms are (7,17,37,77), so \(a_4=77\). The correct option should include (77).

Step 2

Why this answer is correct

The correct answer is C. (69). The terms are (7,17,37,77), so \(a_4=77\). The correct option should include (77).

Step 3

Exam Tip

पद (7,17,37,77) नहीं बल्कि \(a_4=77\) है। सही विकल्प में (77) होना चाहिए।

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