3
There are 898 three-digit even numbers. Nine of them are multiples of 55. That leaves 889 * * * * * There are 450 three-digit even numbers and 17 of them are multiples of 55. So that leaves 433.
There are 9*10*9 = 810 such numbers.
There are 600 such numbers.
no it is a prime number (prime means its multiples are only 1 and itself composite numbers can have multiples of many other things)
3
60 numbers
All of the odd numbers between 11 and 99 inclusive are two digit numbers that are not multiples of 2. There are 45 of them.
There are 898 three-digit even numbers. Nine of them are multiples of 55. That leaves 889 * * * * * There are 450 three-digit even numbers and 17 of them are multiples of 55. So that leaves 433.
50 of them.
67 of them.
42 of them.
450
29 of them.
There are 450 of them.
There are 720 of them.
8100