Question

If HCF and LCM of two numbers are respectively 3 and 630. if first number is 21, find the second number​

Answer 1

Answer:

correct ans is 90

Step-by-step explanation:

HCF = 3

LCM = 630

first number = 21

second number = HCF × LCM / first number

= 3× 630 / 21

= 1890/21

= 90

Answer 2

Answer:

second number is 90

hope it helped