Question

1. How many are numbers between 1 and 100 which are exactly divisible
by 7?​

Answer 1

Answer:

14,21,28,35,42,49,56,63,70,77,84,91,98

Answer 2

Answer:

this forms an AP i.e. as given below....

A.P= 7, 14, 21, 28.......98

here first term= 7 = a

d = 7

use ,

an = a +(n-1)d

98 = 7 +(n-1)7

n-1 =91/7 = 13

n = 14...

so there are 14 numbers between 1 and 100 which are exactly divisible

by 7..

hope this will help you