Question

Find the HCF of the smallest 2 digit number and the largest 2 digit number.

Answer 1

Smallest 2 digit number = 10
Largest 2 digit number = 99

We need to find HCF(10 , 99)

Factors of 10 = 1, 2, 5, 10
Factors of 99 = 1, 3, 9, 11, 33, 99
Common factors = 1
HCF = 1