Question

The number of possible pairs of number, whose product is $5400$ and $HCF$ is $30$, is

• A. $1$
• B. $2$
• C. $3$
• D. $4$

Answer 1

Answer: (A)

$1$

H.C.F $\times$ L.C.M$=$ Product of Numbers $\Rightarrow 30.x=5400\Rightarrow x=180$

$\therefore$ other number $=180$

$\therefore$ only one possible pair exist.