PERT Critical Thinking & Logical Reasoning 3

Question 1

If it rains, the game is canceled. The game was not canceled. What follows?

Accepted Answer

It did not rain

Answer

By contrapositive, if the game was not canceled, it did not rain.

Question 2

Which option weakens the claim 'Studying late at night causes poor grades'?

Accepted Answer

Many late-night students earn high grades

Answer

Late-night students with high grades contradict the causal claim.

Question 3

A statement that cannot be both true and false at the same time illustrates:

Accepted Answer

The principle of contradiction

Answer

The principle of non-contradiction says a claim can't be true and false simultaneously.

Question 4

'We should ban the proposal because the person who suggested it once lied.' This fallacy is:

Accepted Answer

Ad hominem

Answer

Attacking the person instead of the proposal is an ad hominem fallacy.

Question 5

Which inference is valid: 'Some employees are managers, and all managers attended training'?

Accepted Answer

Some employees attended training

Answer

Since some employees are managers and managers trained, some employees attended training.

PERT Practice Test