Four cards lie on a table. Each card has a number printed on one side and a colour on the other. The faces visible on the cards are 2, 3, red, and blue.
Proposition: If a card has an even value on one side, then its opposite face is red.
The cards which MUST be turned over to verify the above proposition are

Question

Four cards lie on a table. Each card has a number printed on one side and a colour on the other. The faces visible on the cards are 2, 3, red, and blue.

Proposition: If a card has an even value on one side, then its opposite face is red.

The cards which MUST be turned over to verify the above proposition are

Prepp Team · Accepted Answer

Turn over 2 to check that its other face is red, and blue to ensure its other face is not even. An odd-numbered card or a red card cannot contradict the one-way rule.

Prepp Team · Answer

2, red

Prepp Team · Answer

2, 3, red

Prepp Team · Answer

2, red, blue

Important Questions from Verbal Ability

Start Your Preparation with Prepp Mobile App