Question

The number of divisor of $2^5{.3}^4{.5}^2{.7}^3.11$ is equal to:

• A. $690$
• B. $720$
• C. $620$
• D. $680$

Answer 1

The correct option is B $720$

Consider the factor $2^5$,
$2^0,2^1,2^2,2^3,2^4,2^5$ any one from the six can be divisor so like that we can say for every number.
So total number of divisor =$6\times 5\times 3\times 4\times 2=30\times 24=720$