GMAT Practice Question Set #26 (Question 76-78)

Data Sufficiency Question #77: Sum of Integers and Multiples  
Time 0 0 : 0 0 : 0 0

If both x and y are positive integers less than 90 and greater than 10, is the sum x + y a multiple of 11?

(1) x - y is a multiple of 22
(2) The tens digit and the units digit of x are the same; the tens digit and the units digit of y are the same
(A)

Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked.

(B)

Statement 2 alone is sufficient but statement 1 alone is not sufficient to answer the question asked.

(C)

Both statements 1 and 2 together are sufficient to answer the question but neither statement is sufficient alone.

(D)

Each statement alone is sufficient to answer the question.

(E)

Statements 1 and 2 are not sufficient to answer the question asked and additional data is needed to answer the statements.

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