गुणोत्तर श्रेढ़ी \(10,20,40,80,\ldots\) के पहले (4) पदों का योग क्या है?

What is the sum of the first (4) terms of the geometric progression \(10,20,40,80,\ldots\)?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

B. (150)

Step 1

Concept

The sum is (10+20+40+80=150). For a small number of terms direct addition is easy.

Step 2

Why this answer is correct

The correct answer is B. (150). The sum is (10+20+40+80=150). For a small number of terms direct addition is easy.

Step 3

Exam Tip

योग (10+20+40+80=150) है। कम पद हों तो सीधे जोड़ना आसान है।

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Mathematics Answer, Explanation and Revision Hints

गुणोत्तर श्रेढ़ी \(10,20,40,80,\ldots\) के पहले (4) पदों का योग क्या है? / What is the sum of the first (4) terms of the geometric progression \(10,20,40,80,\ldots\)?

Correct Answer: B. (150). Explanation: योग (10+20+40+80=150) है। कम पद हों तो सीधे जोड़ना आसान है। / The sum is (10+20+40+80=150). For a small number of terms direct addition is easy.

Which concept should I revise for this Mathematics MCQ?

The sum is (10+20+40+80=150). For a small number of terms direct addition is easy.

What exam hint can help solve this Mathematics question?

योग (10+20+40+80=150) है। कम पद हों तो सीधे जोड़ना आसान है।