Civil Service Exam Reviewer · Logical Reasoning · hard

Data sufficiency: How far is Town A from Town C? (1) Town A is 10 km from Town B. (2) Town B is 6 km from Town C. Which of the following is correct?

  1. Statement (1) ALONE is sufficient, but statement (2) alone is not.
  2. Statement (2) ALONE is sufficient, but statement (1) alone is not.
  3. BOTH statements TOGETHER are sufficient, but NEITHER alone is.
  4. The statements are NOT sufficient, even when taken together.

Answer

D. The statements are NOT sufficient, even when taken together.

Solution

The answer is: The statements are NOT sufficient, even when taken together. Even together, the towns need not lie on a straight line; the distance from A to C could be anything from 4 km to 16 km — not sufficient.

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