There are no multiples of ten.
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They are 10 and 20
Even. Numbers ending in zero are multiples of 10, and 10 = 5 x 2, so all multiples of 10 are even.
-the first 10 multiples of 20 are 20,40,60,80,100,120,140,160,180, and 200. :)
15, 21, 27, 33, and 39 are.
The odd numbers: 1, 3, 9, 15, 21 (that I know of, there are more but I'm not sure what they are.)