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double-plus-five MCQ Questions for Class 9

double-plus-five 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-five.

Question 1/2 Medium Mathematics Sequences and Progressions Recursive rule Class 9 Level 46

यदि \(a_1=4\) और \(a_{n+1}=2a_n+5\) है तो \(a_3\) क्या होगा?

If \(a_1=4\) and \(a_{n+1}=2a_n+5\), what is \(a_3\)?

Explanation opens after your attempt
Correct Answer

C. (31)

Step 1

Concept

The terms are (4,13,31), so \(a_3=31\). Exam tip: double first and then add (5).

Step 2

Why this answer is correct

The correct answer is C. (31). The terms are (4,13,31), so \(a_3=31\). Exam tip: double first and then add (5).

Step 3

Exam Tip

पद (4,13,31) हैं इसलिए \(a_3=31\) है। पहले दोगुना करें फिर (5) जोड़ें।

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Question 2/2 Medium Mathematics Sequences and Progressions Recursive rule Class 9 Level 46

यदि \(a_1=4\) और \(a_{n+1}=2a_n+5\) है तो \(a_4\) क्या होगा?

If \(a_1=4\) and \(a_{n+1}=2a_n+5\), what is \(a_4\)?

Explanation opens after your attempt
Correct Answer

A. (61)

Step 1

Concept

The terms are (4,13,31,67), so \(a_4=67\). The correct option should include (67).

Step 2

Why this answer is correct

The correct answer is A. (61). The terms are (4,13,31,67), so \(a_4=67\). The correct option should include (67).

Step 3

Exam Tip

पद (4,13,31,67) नहीं बल्कि \(a_4=67\) है। सही विकल्प में (67) होना चाहिए।

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