समानांतर श्रेढ़ी \(9,15,21,27,\ldots\) के पहले (4) पदों का योग क्या है?

What is the sum of the first (4) terms of the arithmetic progression \(9,15,21,27,\ldots\)?

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Correct Answer

B. (72)

Step 1

Concept

The sum of the first (4) terms is (9+15+21+27=72). If there are few terms direct addition is easy.

Step 2

Why this answer is correct

The correct answer is B. (72). The sum of the first (4) terms is (9+15+21+27=72). If there are few terms direct addition is easy.

Step 3

Exam Tip

पहले (4) पदों का योग (9+15+21+27=72) है। कम पद हों तो सीधे जोड़ना आसान है।

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Mathematics Answer, Explanation and Revision Hints

समानांतर श्रेढ़ी \(9,15,21,27,\ldots\) के पहले (4) पदों का योग क्या है? / What is the sum of the first (4) terms of the arithmetic progression \(9,15,21,27,\ldots\)?

Correct Answer: B. (72). Explanation: पहले (4) पदों का योग (9+15+21+27=72) है। कम पद हों तो सीधे जोड़ना आसान है। / The sum of the first (4) terms is (9+15+21+27=72). If there are few terms direct addition is easy.

Which concept should I revise for this Mathematics MCQ?

The sum of the first (4) terms is (9+15+21+27=72). If there are few terms direct addition is easy.

What exam hint can help solve this Mathematics question?

पहले (4) पदों का योग (9+15+21+27=72) है। कम पद हों तो सीधे जोड़ना आसान है।