Question

Prime factorization of $20$ is

• A. $2\times 2\times 5$
• B. $4\times 4\times 5$
• C. $4\times 5$
• D. $2\times 5$

Answer 1

The correct option is A $2\times 2\times 5$



Factor Tree method is shown in the above figure for prime factorization of $20$.
So, the prime factorization of $20$ $=2\times 2\times 5$