Question

Exercise 1E 1. How many of the numbers between 101 and 800 inclusive are not divisible by 5? [4 marks]​

Answer 1

Respuesta:

A number is divisible by 5 if it ends in 0 or 5.

Explicación paso a paso:

Any number that ends in 0 or 5 is divisible by 5, so you don't have to be testing every single number, just pick the ones that ends in 0 or 5