Question

Among the first 500 positive integers
determine the integers which are not divisible, nor by 3,nor by 5
determine the integers which are exactly divisible by one of them

Answer 1

Answer:

467

Step-by-step explanation:

Our model: 500 - (number of integers divisible by 3 + number of integers divisible by 5) + number of integers divisible by 15.

Number of integers divisible by 3 = 166

Number of integers divisible by 5 = 100

Number of integers divisible by 15 = 33

500 - (166 - 100) + 33 = 467