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kishokbabu
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If +ve integers X & Y are not both odd, which of the following must be even?
a) XY
b) X+Y
c) X-Y
d) X+Y-1
e) 2(X+Y)-1
a) XY
b) X+Y
c) X-Y
d) X+Y-1
e) 2(X+Y)-1
