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Is 501 + 5 even or odd ?
Is 184 - 170 even or odd?
Is 1002 + 50 even or odd ?
Is 601 - 233 even or odd?
Is 301 + 713 even or odd?
Is 87 + 26 even or odd ?
Is 103 + 42 even or odd?
Is 91 - 71 even or odd?
Is 2020 + 2021 even or odd ?
Is 894 - 517 even or odd?
It is done.