समांतर श्रेणी \(2,8,14,20,\ldots\) के पहले (7) पदों का योग क्या है?

What is the sum of the first (7) terms of the arithmetic progression \(2,8,14,20,\ldots\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (140)

Step 1

Concept

The first (7) terms are (2,8,14,20,26,32,38), and their sum is (140). Pairing symmetric terms makes calculation faster.

Step 2

Why this answer is correct

The correct answer is C. (140). The first (7) terms are (2,8,14,20,26,32,38), and their sum is (140). Pairing symmetric terms makes calculation faster.

Step 3

Exam Tip

पहले (7) पद (2,8,14,20,26,32,38) हैं और योग (140) है। सममित जोड़ से गणना तेज होती है।

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Mathematics Answer, Explanation and Revision Hints

समांतर श्रेणी \(2,8,14,20,\ldots\) के पहले (7) पदों का योग क्या है? / What is the sum of the first (7) terms of the arithmetic progression \(2,8,14,20,\ldots\)?

Correct Answer: C. (140). Explanation: पहले (7) पद (2,8,14,20,26,32,38) हैं और योग (140) है। सममित जोड़ से गणना तेज होती है। / The first (7) terms are (2,8,14,20,26,32,38), and their sum is (140). Pairing symmetric terms makes calculation faster.

Which concept should I revise for this Mathematics MCQ?

The first (7) terms are (2,8,14,20,26,32,38), and their sum is (140). Pairing symmetric terms makes calculation faster.

What exam hint can help solve this Mathematics question?

पहले (7) पद (2,8,14,20,26,32,38) हैं और योग (140) है। सममित जोड़ से गणना तेज होती है।