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divide-by-three MCQ Questions for Class 9

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

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3 questions tagged with divide-by-three.

Question 1/3 Easy Mathematics Sequences and Progressions Recursive rule Class 9 Level 49

यदि \(a_1=45\) और \(a_{n+1}=\frac{a_n}{3}\) है तो \(a_3\) क्या होगा?

If \(a_1=45\) and \(a_{n+1}=\frac{a_n}{3}\), what is \(a_3\)?

Explanation opens after your attempt
Correct Answer

B. (5)

Step 1

Concept

The terms are (45,15,5), so \(a_3=5\). Exam tip: divide the previous term by (3) each time.

Step 2

Why this answer is correct

The correct answer is B. (5). The terms are (45,15,5), so \(a_3=5\). Exam tip: divide the previous term by (3) each time.

Step 3

Exam Tip

पद (45,15,5) हैं इसलिए \(a_3=5\) है। हर बार पिछले पद को (3) से भाग दें।

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Question 2/3 Easy Mathematics Sequences and Progressions Recursive rule Class 9 Level 48

यदि \(a_1=27\) और \(a_{n+1}=\frac{a_n}{3}\) है तो \(a_4\) क्या होगा?

If \(a_1=27\) and \(a_{n+1}=\frac{a_n}{3}\), what is \(a_4\)?

Explanation opens after your attempt
Correct Answer

A. (1)

Step 1

Concept

The terms are (27,9,3,1), so \(a_4=1\). Exam tip: divide by (3) at every step.

Step 2

Why this answer is correct

The correct answer is A. (1). The terms are (27,9,3,1), so \(a_4=1\). Exam tip: divide by (3) at every step.

Step 3

Exam Tip

पद (27,9,3,1) हैं इसलिए \(a_4=1\) है। हर चरण में (3) से भाग दें।

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Question 3/3 Easy Mathematics Sequences and Progressions Recursive rule Class 9 Level 47

यदि \(a_1=90\) और \(a_{n+1}=\frac{a_n}{3}\) है तो \(a_3\) क्या होगा?

If \(a_1=90\) and \(a_{n+1}=\frac{a_n}{3}\), what is \(a_3\)?

Explanation opens after your attempt
Correct Answer

A. (10)

Step 1

Concept

The terms are (90,30,10), so \(a_3=10\). Exam tip: divide the previous term by (3) each time.

Step 2

Why this answer is correct

The correct answer is A. (10). The terms are (90,30,10), so \(a_3=10\). Exam tip: divide the previous term by (3) each time.

Step 3

Exam Tip

पद (90,30,10) हैं इसलिए \(a_3=10\) है। भाग वाले नियम में हर बार पिछले पद को (3) से भाग दें।

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