Question: Find the mean proportional between 64 & 81?\nOptions:\n(A) A) 59\n(B) B) 61\n(C) C) 63\n(D) D) 72\n(E) E) 67 Random thoughts:
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Formula = √a×b\nA = 64 and B = 81\n√64×81 = 8 × 9 = 72 The final answer: (D).
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