Question

Will n be an integer?

I. 3n is an odd number.

II. 2n is an even number.

• A. If the data in statement I alone is sufficient to answer the question, while the data in statement II alone is not sufficient to answer the question
• B. If the data in statement II alone is sufficient to answer the question, while the data in statement I alone is not sufficient to answer the question
• C. If the data given in both statements I and II together are not sufficient to answer the question
• D. If the data in both statements I and II together are necessary to answer the question.

Answer 1

The correct option is D

If the data in both statements I and II together are necessary to answer the question.

When taking both statements I and II together

3n = odd number

2n = even number

It is possible only when n is an integer.

So, both statements are required to answer the question.