Question

Which of the following represents the prime factorisation of 124?

• A. $1\times 4\times 31$
• B. $1\times 2\times 62$
• C. $2\times 2\times 31$
• D. $1\times 2\times 31$

Answer 1

The correct option is C $2\times 2\times 31$

124 can be written as,
$124=1\times 124=2\times 62=2\times 2\times 31$

We can observe that 2, 2 and 31 can not be factorized further.
So, 124 can be written as $2\times 2\times 31$ as the product of prime factors.