NTS NTS - National Testing Service Critical Thinking and Logical Reasoning

Question 1

If all roses are flowers and all flowers need water, what can be concluded?

Accepted Answer

Roses need water.

Answer

By syllogistic reasoning, since roses are flowers and flowers need water, roses must also need water.

Question 2

Which conclusion follows from: "No mammals are cold-blooded. All snakes are cold-blooded."?

Accepted Answer

No snakes are mammals.

Answer

Since mammals are never cold-blooded and snakes always are, snakes and mammals share no members.

Question 3

Identify the logical fallacy: "You can't trust his opinion on taxes because he's wealthy."

Accepted Answer

Ad hominem

Answer

Attacking the person's wealth instead of evaluating their argument is an ad hominem fallacy.

Question 4

In the sequence 2, 6, 18, 54, ___, what comes next?

Accepted Answer

162

Answer

Each term is multiplied by 3: 2×3=6, 6×3=18, 18×3=54, 54×3=162.

Question 5

Which number is the odd one out: 4, 9, 16, 25, 35, 49?

Accepted Answer

35

Answer

All others (4, 9, 16, 25, 49) are perfect squares, but 35 is not (it falls between 5²=25 and 6²=36).

NTS - National Testing Service Practice Test