How many numbers of two digits are divisible by 7?

Explanation

The 2-digit number divisible by 7 is `14, 21, 28, 35……98`

The first 2-digit number which is divisible by 7 is 14

The last 2-digit number which is divisible by 7 is 98

The list of 2-digit numbers divisible by 7 are

`14, 21, 28, 35……98 `which forms an A.P

Consider a formula

`T_n= a + (n – 1)d`

Where
...