Question

The product of prime factors of 140 is .

• A. $2^2$ x 5 x 7
• B. $2^2$ x 3 x 7
• C. $2^2$ x 5 x 3

Answer 1

The correct option is A $2^2$ x 5 x 7

140 can be expressed as:

$140=2\times 2\times 5\times 7$

$=2^2\times 5\times 7$