समांतर श्रेणी \(72,64,56,48,\ldots\) में (0) कौन-सा पद है?

In the arithmetic progression \(72,64,56,48,\ldots\), which term is (0)?

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Correct Answer

C. (10)वाँ(10)th

Step 1

Concept

From (72+(n-1)(-8)=0), (8(n-1)=72) and (n=10). The same \(a_n\) formula works in a decreasing progression.

Step 2

Why this answer is correct

The correct answer is C. (10)वाँ / (10)th. From (72+(n-1)(-8)=0), (8(n-1)=72) and (n=10). The same \(a_n\) formula works in a decreasing progression.

Step 3

Exam Tip

(72+(n-1)(-8)=0) से (8(n-1)=72) और (n=10)। घटती श्रेणी में भी वही \(a_n\) सूत्र लगता है।

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Mathematics Answer, Explanation and Revision Hints

समांतर श्रेणी \(72,64,56,48,\ldots\) में (0) कौन-सा पद है? / In the arithmetic progression \(72,64,56,48,\ldots\), which term is (0)?

Correct Answer: C. (10)वाँ / (10)th. Explanation: (72+(n-1)(-8)=0) से (8(n-1)=72) और (n=10)। घटती श्रेणी में भी वही \(a_n\) सूत्र लगता है। / From (72+(n-1)(-8)=0), (8(n-1)=72) and (n=10). The same \(a_n\) formula works in a decreasing progression.

Which concept should I revise for this Mathematics MCQ?

From (72+(n-1)(-8)=0), (8(n-1)=72) and (n=10). The same \(a_n\) formula works in a decreasing progression.

What exam hint can help solve this Mathematics question?

(72+(n-1)(-8)=0) से (8(n-1)=72) और (n=10)। घटती श्रेणी में भी वही \(a_n\) सूत्र लगता है।