Instructions

Data Sufficiency: In each of the following Questions you find a question followed by two statements labelled (I) and (II). You have to decide whether these statements answer the given questions. Mark your option as

Question 187

Let m and n be positive integers. Is n even?
I) $$m \times n$$ is an odd integer.
II) $$m + n$$ is an odd integer.

Solution

m*n = odd integer means that both m and n are odd integers.

m+n = Odd can be because of 2 cases:
a) m is odd, n is even
b) m is even, n is odd.

Hence, statement 1 alone can answer the question.

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Let m and n be positive integers. Is n even?I) $$m \times n$$ is an odd integer.II) $$m + n$$ is an odd integer.

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Let m and n be positive integers. Is n even?
I) $$m \times n$$ is an odd integer.
II) $$m + n$$ is an odd integer.