Question

What is the no of integers that are not divisible by 7 in the range from 3 to 500?

Answer 1

Solution:

According to the question,

Total Number from 3 to 500
=> 500 − 3 + 1 = 498
=> 500 −3 + 1 = 498

Numbers that are divisible by 7

First number=7

Last number = 497

Common difference = 7

Hence 497= 7 + (n−1) × 7

=> n = 71497 = 7 + (n−1) × 7

=> n = 71

Therefore, the numbers that are not divisible by 7

=> 498 −71 = 427

[Answer: =427]