Question

How many two digit natural numbers are divisible by 7 ??

Answer 1

Two digit Of natural numbers is divisible by 7 is 13 no.

Answer 2

14,21,...98

a=14

d=7

l=98

tn= a+(n-1)d

98=14+(n-1)7

84=(n-1)7

12=n-1

n= 13

Therefore,

13 two digit natural numbers are divisible by 7