समांतर श्रेणी \(50,43,36,29,\ldots\) में (1) कौन-सा पद है?

In the arithmetic progression \(50,43,36,29,\ldots\), which term is (1)?

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Correct Answer

B. (8)वाँ(8)th

Step 1

Concept

From (50+(n-1)(-7)=1), (7(n-1)=49) and (n=8). The same \(a_n\) formula works in a decreasing progression.

Step 2

Why this answer is correct

The correct answer is B. (8)वाँ / (8)th. From (50+(n-1)(-7)=1), (7(n-1)=49) and (n=8). The same \(a_n\) formula works in a decreasing progression.

Step 3

Exam Tip

(50+(n-1)(-7)=1) से (7(n-1)=49) और (n=8)। घटती श्रेणी में भी वही \(a_n\) सूत्र लगता है।

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Mathematics Answer, Explanation and Revision Hints

समांतर श्रेणी \(50,43,36,29,\ldots\) में (1) कौन-सा पद है? / In the arithmetic progression \(50,43,36,29,\ldots\), which term is (1)?

Correct Answer: B. (8)वाँ / (8)th. Explanation: (50+(n-1)(-7)=1) से (7(n-1)=49) और (n=8)। घटती श्रेणी में भी वही \(a_n\) सूत्र लगता है। / From (50+(n-1)(-7)=1), (7(n-1)=49) and (n=8). The same \(a_n\) formula works in a decreasing progression.

Which concept should I revise for this Mathematics MCQ?

From (50+(n-1)(-7)=1), (7(n-1)=49) and (n=8). The same \(a_n\) formula works in a decreasing progression.

What exam hint can help solve this Mathematics question?

(50+(n-1)(-7)=1) से (7(n-1)=49) और (n=8)। घटती श्रेणी में भी वही \(a_n\) सूत्र लगता है।