Question

The Sum of the LCM and the HCF of the numbers 90 and 150 is?

• A. 480

Answer 1

The correct option is A 480
$90=2\times 3\times 3\times 5$
$150=2\times 3\times 5\times 5$
$\therefore \text{HCF}(90,150)=2\times 3\times 5=30$
$\text{LCM}(90,150)=2\times 3\times 3\times 5\times 5=450$
Sum of the LCM and the HCF $=450+30=480$