it is a odd number it ends in 1.
odd numbers end in 1
even numbers end in 2
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231 / 3 = 77So 76 + 77 +78 = 23177
Odd. Even + Even = Even Odd + Odd = Even Odd + Even = Even + Odd = Odd
odd * odd = odd answer even * even = even answer odd * even = even answer
Yes. Even + Even = Even, Odd + Odd = Even and Even + Odd or Odd + Even = Odd
770