Question

Is the integer divisible by 3?
(1) the last digit in n is 3.
(2) n + 5 is divisible by 6

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

Answer 1

The correct option is D Statements (1) and (2) TOGETHER are NOT sufficient

1) ⇒⇒ Last digit of n is 3
⇒⇒ n may be 3, 13,23,33,43,53,63, .........
(2) ⇒n+5⇒n+5 is divisible by 6
⇒⇒ n may be 1,7,13,19,25,31,37,43, .........
Hence, we cannot be determined that integer is divisible by 3 even using both the statements.