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Question:

Direction: Each of these questions is followed by two statements, I and II. Mark the answer as

1. if the question can be answered with the help of statement I alone.
2. if the question can be answered with the help of statement II alone.
3. if both statement I and statement II are needed to answer the question.
4. if the question cannot be answered even with the help of both the statements.

Is x + y – z + t even?

I. x + y + t is even.
II. t and z are odd.

Explanation:

This can be answered using both the statements.

Statement II suggests that both t and z are odd.

Statement I suggests that (x + y + t) is even.

Since the difference between an even and an odd number is always odd, (x + y + t) – z will be odd.

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