Cognitive Abilities Test (CAT4) Practice Exam 2025 - Free CAT4 Practice Questions and Study Guide

Question: 1 / 400

In the Wason four-card problem, which cards need to be flipped to validate the rule regarding vowels and even numbers?

A and 8

A and 13

To validate the rule that states "if a card has a vowel on one side, then it must have an even number on the other side," it is important to identify which cards need to be checked to either confirm or disprove this statement.

In this scenario, the card showing the letter 'A' is significant because it is a vowel, and the rule stipulates that it should have an even number on the opposite side. Flipping this card will help confirm if the rule holds true.

On the other hand, the card showing the number '13' is also crucial. The reasoning here is that if the side with '13' were to show a vowel, it would directly contradict the stated rule, as '13' is an odd number. Therefore, it is necessary to flip this card to ensure that it does not have a vowel on the opposite side.

Thus, the proposed answer encompasses the cards that are critical in confirming or invalidating the rule: checking the 'A' for a corresponding even number and the '13' for the absence of a vowel.

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8 and M

M and 13

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