Q1. How many numbers between 1 to 550 are divisible by 5 but
not by 9?
Q2. How many numbers between 1 to 165 are not divisible either
by 8 or by 6?
Q3. How many numbers between 1 to 1950 are divisible either
by 5 or by 11?
Q4. A= set of numbers from 1 to 275. There are 55 numbers in A
that...
