DS - even & odd : x even integer ?

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DS - even & odd : x even integer ?

by Xbond » Sun Oct 04, 2009 7:47 am
Hi there,

Could you help me to resolve this PS and explain the step of resolution

If x, y and Z are integers and xy+z is an odd integer, is x an even integer ?

1) xy+xz is an even integer

2) y+xz is an odd intger
Source: — Data Sufficiency |