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Let `n in N ,n > 25.`Let `A ,G ,H`deonote te arithmetic mean, geometric man, and harmonic mean of 25 and `ndot`The least value of `n`for which `A ,G ,H in {25 , 26 , n}`isa. 49 b.81 c.169 d. 225A. 49B. 81C. 169D. 225 |
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Answer» Correct Answer - D `A=(25+n)/2,G=5sqrtn,H=(50n)/(25+n)` As A,G,H are natural numbers, n must be odd perfect square. Now, H will be a natural number, if we take n =225. |
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