Problem
COM-B1-M01-P009 Divisible by \(3\) or \(5\)
#9
★★☆☆☆ Level 2 of 5
How many integers from \(1\) to \(200\) are divisible by \(3\) or by \(5\)?
Add multiples of \(3\) and \(5\), but subtract multiples of \(15\).
Multiples of \(3\): \(66\). Multiples of \(5\): \(40\). Multiples of both, i.e. \(15\): \(13\). Answer: \(66+40-13=93\).
First careful overcounting correction.