किस (x) के लिए (16,x,81) धनात्मक गुणोत्तर श्रेढ़ी के लगातार पद होंगे?
For which (x) will (16,x,81) be consecutive terms of a positive geometric progression?
Explanation opens after your attempt
C. (36)
Concept
\(x^2=16\cdot81=1296\), so positive (x=36). The middle term is the geometric mean.
Why this answer is correct
The correct answer is C. (36). \(x^2=16\cdot81=1296\), so positive (x=36). The middle term is the geometric mean.
Exam Tip
\(x^2=16\cdot81=1296\), इसलिए धनात्मक (x=36)। मध्य पद ज्यामितीय माध्य होता है।
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