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?
Explanation opens after your attempt
C. (320)
Concept
\(x^2=5\cdot80=400\), so (x=20) and (r=4), hence (y=320). First use the middle term to find the ratio.
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.
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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