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How many 2 digit whole numbers are multiples of both 6 and 9?
3
How many three digit counting numbers are multiples of 2 but not of 55?
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.
How many three digit counting numbers are not multiples of 10?
There are 9*10*9 = 810 such numbers.
How many five digit multiples of 3 are formed using 012346 and 7 without repetition?
There are 600 such numbers.
Is 29 a two digit composite number?
no it is a prime number (prime means its multiples are only 1 and itself composite numbers can have multiples of many other things)
How many 2 digit whole numbers are multiples of both 6 and 9?
3
How many two digit counting numbers are either multiples of 2 or multiples of 3?
60 numbers
How many two digit numbers are not multiples of 2?
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.
How many three digit numbers are there that are multiples of 30?
29 of them.
How many 3-digit numbers are multiples of 18?
50 of them.
How many three digit numbers are multiples of 21?
42 of them.
How many four-digit numbers are multiples of 15?
67 of them.
How many three-digit numbers are multiples of 2?
450
How many three digit counting numbers are multiples of 2 but not of 55?
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.
How many two-digit counting numbers are not multiples of 10?
81
How many three-digit counting numbers are not multiples of 5?
There are 720 of them.
How many four-digit counting numbers are not multiples of 10?
8100
