GMAT Quantitative Reasoning Practice Test 6

Question : 57 of 100

Marks: +1, -0

A

is a prime number, what is the value of

A

?
(1)

0< A< 10

.
(2)

(A-2)

is divisible by 3.

Statement (1) BY ITSELF is sufficient to answer the question, but statement (2) by itself is not.
Statement (2) BY ITSELF is sufficient to answer the question, but statement (1) by itself is not.
Statements (1) and (2) TAKEN TOGETHER are sufficient to answer the question, even though NEITHER statement BY ITSELF is sufficient.
Either statement BY ITSELF is sufficient to answer the question.
Statements (1) and (2) TAKEN TOGETHER are NOT sufficient to answer the question, requiring more data pertaining to the problem.

Validate

Solution:

Statement (1) narrows down

A

to be one of:

1,2,3,5

and 7 . This statement is insufficient.
Statement (2) is also insufficient; there are a lot of numbers that fulfill this statement, like 17, 23 and many more. Even after you combine both statements, there are still two options: 5 and 2. In both, when subtracting 2 we get a number that is divisible by 3.

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