Use some thinking to answer the following question. Find the mean proportional between 81 & 100?\nOptions:\n(A) A) 59\n(B) B) 61\n(C) C) 63\n(D) D) 65\n(E) E) 90
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Formula = √a×b\nA = 81 and B = 100\n√81×100 = 9 × 10 = 90 So the final answer is (E).
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