60 numbers
There are 720 of them.
8100
45 multiples of 2 plus 30 multiples of 3 minus 15 multiples of 6 equals 60 numbers
There are many multiples of five. Some are: 5, 10, 15, 20, 25, 30. If you want more, then just keep counting up by five.
60 numbers
There are 450 of them.
There are 720 of them.
8100
81
4500 of them.
There are 6,750 such numbers.
There are 9*10*9 = 810 such numbers.
45 multiples of 2 plus 30 multiples of 3 minus 15 multiples of 6 equals 60 numbers
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 720 of them. The three digit counting numbers are 100-999. All multiples of 5 have their last digit as 0 or 5. There are 9 possible numbers {1-9} for the first digit, There are 10 possible numbers {0-9} for each of the first digits, There are 8 possible numbers {1-4, 6-9} for each of the first two digits, Making 9 x 10 x 8 = 720 possible 3 digit counting numbers not multiples of 5.
I believe there are 81. There are 9 after every multiple of 10, including 90.