Question

The $LCM$ and $HCF$ of $2$ numbers are $120$ and $6$ respectively. If one of the numbers is $30$, find the other.

• A. $27$
• B. $33$
• C. $24$
• D. $18$

Answer 1

Answer: (C)

$24$

Let the other number be $x$

then $H.C.F\times L.C.M=Productofnumbers$

$\begin{array}{c}\Rightarrow 6\times 120=30\times x\\ \Rightarrow x=\frac{6\times 120}{30}\\ x=24\end{array}$