Which could be the missing term of the geometric sequence 5, __, 125, ... ?

Question

Rachael Kirby

Mathematics

11 September, 01:25

Which could be the missing term of the geometric sequence 5, __, 125, ... ?

+5

Answers (1)

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Alexis · Answer 1

This question is asking you to find the geometric mean.

The equation for the geometric mean is:

(a*b*c etc) ^ (1/n) where a, b, c are elements in the sequence and n is the number of elements ... in this case the geometric mean is:

(5*125) ^ (1/2) which is the same as

√625

25