Question

If 3 920 = 2^x x 5^y x 7^z, find the possible values of x, y and z.

Answer 1

x = 4

y = 1

z = 2

Explanation:

By prime factorising 3920,

3920 = (2⁴)(5)(7²)

⇒ x = 4

y = 1

z = 2