Question

Hcf of two numbers is 5 and their lcm is 210.if one of the numbers is30,then find the other number?

Answer 1

HCF × LCM = a× b
5× 120 = 30 ×b
600÷30 = b
b= 20

Answer 2

Hello friend!!!

Here's your answer

The product of hcf and lcm is equal to the product of the 2 number.
Mathematically, HCF × LCM = n1 × n2

◆But note that this formula is applicable for 2 number only◆

So from your question,
5 × 210 = 30 × n2
n2 = (5 × 210)/30 = 35

So the other number is 35.

HOPE THIS HELPS...... ☺️