Math New Drill (level 1) : Number sense and theory Problem 2(2) TOYOEIWA-2008

Find the number of figures to be divisible by 3 or 5 in integers from 1 to 200.

Answer

93

Solution

200 / 3 = 68 remainder 2

200 / 5 = 40

200 / 15 = 13 remainder 5

66 + 40 - 13 = 93