X Y X and W are integers The expression X - Y - Z is even and the expression Y

c. w must be odd
as we know even-even=even,odd-odd=even,even-odd=odd
since in expression x-y-z,x is even therefore y-z must be even
in expression y-z-w,y-z is even(we calculate it earlier) hence w must be an odd to satisfy the 2nd expression
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A.W must be odd
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A. W must be odd
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w must be odd otherwise 2nd expression will not be odd
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y-z must be odd
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there are many mistakes in que
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A. W must be odd
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w must be odd
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w must be odd bcoz y+z is even
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a.w must be odd
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w must be odd because if x is even y-z should be even to satisfy x-y-z to be true therfore w should be odd to satisfy y-z-w
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given expression=x-y-z=even
again y-z-w=odd
now add both we get
x-y-z+(y-z-w)=x-w
and according to questions x is even so;
even -w=odd
so to get we have to subtract odd so w must be odd.answer A and B both are same.
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to all those who say answwer is w is odd...take x=13 y=7 z=4 w=2 .... now check..eq holds true even if w is even...answer is none of these
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x is even
so take y,z values are 2,4
so x-y-z=8-2-4=2 even value
x=8
y-z-w=odd
but y,z is even value
any even value add and sub same even value should come
so w is odd integer
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X, Y, X and W are integers. The expression X - Y - Z is even and the expression Y - Z - W is odd. If X is even what must be true?
a) W must be odd
b) Y - Z must be odd
c) W must be odd
d) Z must be odd