odd
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When it ends in a five it is odd... When it ends in a zero it is even. 5 Odd 10 Even 15 Odd 20 Even 25 Odd etc...
10 can be divided by 5. 10 is even. 15 can be divided by 5. 15 is odd. So some of the numbers that can be divided by 5 are odd and some are even.
None. Even and odd numbers are defined only for integers and 1.5 is not an integer.
Even numbers are always divisible by 2 with no remainder.
Any set of three odd integers must be odd - for example, 3 + 5 + 7 = 15. Similarly, the sum of an even number of odd integers added together will always be an even integer.