यदि (3,x,27) गुणोत्तर श्रेढ़ी के लगातार तीन धनात्मक पद हैं, तो (x) क्या होगा?
If (3,x,27) are three consecutive positive terms of a geometric progression, what is (x)?
Explanation opens after your attempt
B. (9)
Concept
For the middle term (x), \(x^2=3\cdot27=81\), so (x=9). For positive terms take the positive geometric mean.
Why this answer is correct
The correct answer is B. (9). For the middle term (x), \(x^2=3\cdot27=81\), so (x=9). For positive terms take the positive geometric mean.
Exam Tip
मध्य पद (x) के लिए \(x^2=3\cdot27=81\), इसलिए (x=9)। धनात्मक पदों में ज्यामितीय माध्य धनात्मक लें।
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