Question

Find no of integers betern 100 and 1000divisible by 7

Answer 1

Answer:

a = 105. , l = 994 ,d=7

n =

$n = \frac{l - a}{d} + 1 \\ = \frac{994 - 105}{7} + 1 \\ = \frac{889}{7} + 1 \\ = 127 + 1 \\ = 128$