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constant-subtract MCQ Questions for Class 9

constant-subtract 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 constant-subtract.

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

यदि \(a_1=28\) और \(a_{n+1}=a_n-4\) है तो \(a_5\) क्या होगा?

If \(a_1=28\) and \(a_{n+1}=a_n-4\), what is \(a_5\)?

Explanation opens after your attempt
Correct Answer

C. (12)

Step 1

Concept

The terms are (28,24,20,16,12), so \(a_5=12\). Exam tip: subtract from the previous term each time.

Step 2

Why this answer is correct

The correct answer is C. (12). The terms are (28,24,20,16,12), so \(a_5=12\). Exam tip: subtract from the previous term each time.

Step 3

Exam Tip

पद (28,24,20,16,12) हैं इसलिए \(a_5=12\) है। घटाव वाले नियम में हर बार पिछले पद से घटाएँ।

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

यदि \(a_1=18\) और \(a_{n+1}=a_n-3\) है तो \(a_4\) क्या होगा?

If \(a_1=18\) and \(a_{n+1}=a_n-3\), what is \(a_4\)?

Explanation opens after your attempt
Correct Answer

D. (9)

Step 1

Concept

The terms are (18,15,12,9), so \(a_4=9\). Exam tip: keep the sign correct in subtraction rules.

Step 2

Why this answer is correct

The correct answer is D. (9). The terms are (18,15,12,9), so \(a_4=9\). Exam tip: keep the sign correct in subtraction rules.

Step 3

Exam Tip

पद (18,15,12,9) हैं इसलिए \(a_4=9\) है। घटाने वाले नियम में चिह्न सही रखें।

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

यदि \(a_1=30\) और \(a_{n+1}=a_n-4\) है तो \(a_5\) क्या होगा?

If \(a_1=30\) and \(a_{n+1}=a_n-4\), what is \(a_5\)?

Explanation opens after your attempt
Correct Answer

C. (14)

Step 1

Concept

The terms are (30,26,22,18,14), so \(a_5=14\). Exam tip: subtract (4) at each step.

Step 2

Why this answer is correct

The correct answer is C. (14). The terms are (30,26,22,18,14), so \(a_5=14\). Exam tip: subtract (4) at each step.

Step 3

Exam Tip

पद (30,26,22,18,14) हैं इसलिए \(a_5=14\) है। हर चरण में (4) घटाएँ।

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