Question

Common prime factors of 36, 60 and 72 are

• A. $2\times 2$
• B. $2\times 3$
• C. $3\times 3$
• D. $3\times 2\times 2$

Answer 1

The correct option is D $3\times 2\times 2$

Explanation l- Prime factors of 36 are
2 $\times 2\times 3\times 3$
Prime factors of 60 are 2$\times 2\times 3\times 5$
Prime factors of 72 are
2 $\times 2\times 2\times 3\times 3$
$\therefore$ Common prime factors are $2\times 2\times 3$