Question

What is the geometric mean of 3 and 7?

a) square root of 21
b) 2 square root of 6
c) 2 square root of 7
d) 21

Answer 1

a

Explanation:

The geometric mean of 2 numbers a and b is the square root of the product of the 2 numbers, that is

geometric mean =
`√(ab)`

given 3 and 7, then

geometric mean =
`√(3(7))` =
`√(21)` → a