The first five positive integer multiples of 90 are:
1 x 90 = 90
2 x 90 = 180
3 x 90 = 270
4 x 90 = 360
5 x 90 = 450
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The first 5 multiples of 45 are: 45, 90, 135, 180, and 225.
There are 3 such numbers: 30, 60, 90.
The multiples of five between sixty and ninety (inclusive) are 60, 65, 70, 75, 80, 85 and 90.
To find the common multiples of 54 and 90, first list the multiples of each number. The multiples of 54 are 54, 108, 162, 216, etc. The multiples of 90 are 90, 180, 270, 360, etc. The common multiples of 54 and 90 are numbers that appear in both lists, such as 180 and 360.
Since the lowest common multiple of 9 and 2 is 18, all of the common multiples of 9 and 2 are multiples of 18. The first five are: 18, 36, 54, 72, 90 Since 9 is odd thean there are going to be odd numbers, which are not multiples of two.