Question

The LCM and HCF of two numbers are 432 and 72 respectively. If one of the numbers is 216, what is the other ?

• A. 432
• B. 114
• C. 144
• D. 72

Answer 1

The correct option is C 144

Let the other number be x.
Now,
HCF × LCM = Product of two numbers
⇒ 72 × 432 = x × 216
⇒$x=\frac{72\times 432}{216}$
⇒$x=144$
​Hence, the other number is 144.