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How many three digit numbers are multiples of 21?
42 of them.
How many two digit counting numbers are not multiples of 10?
There are 6,750 such numbers.
How many three digit numbers are multiples of 20?
To find how many three-digit numbers are multiples of 20, we need to determine the range of three-digit numbers divisible by 20. The smallest three-digit number divisible by 20 is 100, and the largest is 980. To find the count of numbers in this range, we can divide the largest number by 20 and subtract the result of dividing the smallest number by 20, then add 1 to account for the inclusive range. Therefore, the number of three-digit multiples of 20 is (980/20) - (100/20) + 1 = 49 - 5 + 1 = 45.
How many numbers are there that are multiples of 12 and factors of 66?
There are none.
What has factors 2 and 5?
There are infinetly many numbers which have 2 and 5 as their factors. Some examples are 10, 20, 30, 40, etc. 2 and 5 both are prime numbers and their common multiples are the multiples of 2 x 5 = 10. So all the multiples of 10 have 2 and 5 as their factors. However if consider 2 and 5 as the only two proper factors, then the required number is 10.
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
How many three digit counting numbers are not multiples of 2?
There are 450 of them.
