The first 2 digit number divisible by 7 is 14, and the last 2 digit number
divisible by 7 is 98, so it forms AP with common difference 7
14,…,98
98 = 14 + (n – 1) × 7
n = 22
How many 2 – digit numbers are divisible by 7?
How many 2 – digit numbers are divisible by 7?