1.
If x, y, and z are integers and xy + z is and odd integer, is x an even integer?
(1) xy + xz is an even integer.
(2) y + xz is an odd integer.
Answer : A
2.
If there are more than two numvers in a certain list, is each of the number in the list equal to 0?
(1) The product of any two numbers in the list is equal to 0.
(2) The sum of any two numbers in the list is equal to 0.
Answer : B
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