College of Admission Tests Multan

Principles of Data Sufficiency

Solve the question of Principles of Data Sufficiency and select the option from the choices A through D/E. Check your Answer and view the explanation.

Question: 1

Is xy a multiple of 48?

(1) x is a multiple of 4.

(2) y is a multiple of 6.

  • Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
  • Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
  • BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
  • EACH statement ALONE is sufficient.
  • Statements (1) and (2) TOGETHER are NOT sufficient.

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Correct Answer: E

Not every multiple of 4 is a multiple of 48 (For example, 8 [= 4 × 2] is a multiple of 4, but 8 is not a multiple of 48). Hence, Statement (1) alone is not sufficient to answer the question.

Not every multiple of 6 is a multiple of 48 (For example, 12 [= 6 × 2] is a multiple of 6, but 12 is not a multiple of 48). Hence, Statement (2) alone is not sufficient to answer the question.

A multiple of both 4 and 6 must be a multiple of the least common multiple of 4 and 6, which is 24. But again, not every multiple of 24 is a multiple of 48 (For example, 72 [= 24 × 3] is a multiple of 24, but 72 is not a multiple of 48). Hence, statements (1) and (2) together cannot answer the question. The answer is (E).