किस (x) के लिए (5,x,45) धनात्मक गुणोत्तर श्रेढ़ी के लगातार पद होंगे?
For which (x) will (5,x,45) be consecutive terms of a positive geometric progression?
Explanation opens after your attempt
B. (15)
Concept
\(x^2=5\cdot45=225\), so positive (x=15). The middle term is the geometric mean.
Why this answer is correct
The correct answer is B. (15). \(x^2=5\cdot45=225\), so positive (x=15). The middle term is the geometric mean.
Exam Tip
\(x^2=5\cdot45=225\), इसलिए धनात्मक (x=15)। मध्य पद ज्यामितीय माध्य होता है।
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