## geometric meanThe geometric mean of n numbers is the n-th root of the
product of the numbers. Thus, in the case of two numbers, a and b, the geometric
mean is √(ab). For example, the geometric mean of the numbers 4 and 9 is x = √(4
× 9) = √36 = ±6. See also geometric sequence. ## Related category• APPROXIMATIONS AND AVERAGES | |||||

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