Question

Below given question has a main statement followed by four statements labeled A, B, C and D. Choose the ordered pair of statements, where the first statement implies the second and the two statements are logically consistent with the main statement.

You cannot catch the bus unless it is morning. (A) This is morning. (B) You can catch the bus. (C) This is not morning. (D) You cannot catch the bus.

Accepted Answer

D. The main statement is: "If you catch the bus $\implies$ it is morning", which is logically equivalent to its contrapositive: "If it is not morning $\implies$ you cannot catch the bus". Statement (C) is "This is not morning" and Statement (D) is "You cannot catch the bus". Therefore, CD represents the valid contrapositive implication.

Logical Deductions Pair

Explanation

Practise this under exam conditions