समानांतर श्रेढ़ी \(40,35,30,25,\ldots\) में (5) कौन-सा पद है?

In the arithmetic progression \(40,35,30,25,\ldots\), which term is (5)?

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Correct Answer

C. (8)वाँ(8)th

Step 1

Concept

(a_n=40+(n-1)(-5)), and (40-5(n-1)=5) gives (n=8). In a decreasing progression, the position is still positive.

Step 2

Why this answer is correct

The correct answer is C. (8)वाँ / (8)th. (a_n=40+(n-1)(-5)), and (40-5(n-1)=5) gives (n=8). In a decreasing progression, the position is still positive.

Step 3

Exam Tip

(a_n=40+(n-1)(-5)) और (40-5(n-1)=5) से (n=8)। घटती श्रेढ़ी में भी पद-संख्या धनात्मक होती है।

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Mathematics Answer, Explanation and Revision Hints

समानांतर श्रेढ़ी \(40,35,30,25,\ldots\) में (5) कौन-सा पद है? / In the arithmetic progression \(40,35,30,25,\ldots\), which term is (5)?

Correct Answer: C. (8)वाँ / (8)th. Explanation: (a_n=40+(n-1)(-5)) और (40-5(n-1)=5) से (n=8)। घटती श्रेढ़ी में भी पद-संख्या धनात्मक होती है। / (a_n=40+(n-1)(-5)), and (40-5(n-1)=5) gives (n=8). In a decreasing progression, the position is still positive.

Which concept should I revise for this Mathematics MCQ?

(a_n=40+(n-1)(-5)), and (40-5(n-1)=5) gives (n=8). In a decreasing progression, the position is still positive.

What exam hint can help solve this Mathematics question?

(a_n=40+(n-1)(-5)) और (40-5(n-1)=5) से (n=8)। घटती श्रेढ़ी में भी पद-संख्या धनात्मक होती है।