यदि (5,x,80,y) गुणोत्तर श्रेढ़ी है और सभी पद धनात्मक हैं, तो (y) क्या होगा?

If (5,x,80,y) is a geometric progression and all terms are positive, what will (y) be?

Author: Muft Shiksha Editorial Team Published:
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Correct Answer

C. (320)

Step 1

Concept

\(x^2=5\cdot80=400\), so (x=20) and (r=4), hence (y=320). First use the middle term to find the ratio.

Step 2

Why this answer is correct

The correct answer is C. (320). \(x^2=5\cdot80=400\), so (x=20) and (r=4), hence (y=320). First use the middle term to find the ratio.

Step 3

Exam Tip

\(x^2=5\cdot80=400\), इसलिए (x=20) और (r=4), अतः (y=320)। पहले मध्य पद से अनुपात निकालें।

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Mathematics Answer, Explanation and Revision Hints

यदि (5,x,80,y) गुणोत्तर श्रेढ़ी है और सभी पद धनात्मक हैं, तो (y) क्या होगा? / If (5,x,80,y) is a geometric progression and all terms are positive, what will (y) be?

Correct Answer: C. (320). Explanation: \(x^2=5\cdot80=400\), इसलिए (x=20) और (r=4), अतः (y=320)। पहले मध्य पद से अनुपात निकालें। / \(x^2=5\cdot80=400\), so (x=20) and (r=4), hence (y=320). First use the middle term to find the ratio.

Which concept should I revise for this Mathematics MCQ?

\(x^2=5\cdot80=400\), so (x=20) and (r=4), hence (y=320). First use the middle term to find the ratio.

What exam hint can help solve this Mathematics question?

\(x^2=5\cdot80=400\), इसलिए (x=20) और (r=4), अतः (y=320)। पहले मध्य पद से अनुपात निकालें।