87 is odd because it is not divisible by 2
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87 is an odd number. Since 87 / 2 = 43.5, not a whole number, it is odd. If it were even, you would be able to evenly divide it by two.
87 is an odd number. Even numbers are always able to be evenly divided by 2.
It is even. Both numbers end with odd digits and two odd digits always add to an even number. You can see that is the case in this instance.377 + 87 = 464
Odd. Even + Even = Even Odd + Odd = Even Odd + Even = Even + Odd = Odd
odd * odd = odd answer even * even = even answer odd * even = even answer