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Brynlee
08-22-2013, 07:13 PM
X,Y,Z and W are integers and X(Y+ZW) is odd . Why X cannot be even?
Thanks

Jack
08-22-2013, 07:14 PM
if X is an even number then the product of X with any non zero integer will be also even.

Hope these help!

Brynlee
08-22-2013, 07:15 PM
Thank you Jack!