Mensa IQ Test Mensa IQ Syllogisms and Logical Arguments 5

Question 1

All prime numbers greater than 2 are odd. 7 is a prime number greater than 2. Therefore:

Accepted Answer

7 is odd

Answer

7 is even

Answer

7 is not prime

Answer

No odd numbers are prime

Question 2

Some musicians are athletes. All athletes are disciplined. Which is valid?

Accepted Answer

Some musicians are disciplined

Answer

All musicians are disciplined

Answer

No musicians are disciplined

Answer

All disciplined people are musicians

Question 3

Premises: All frogs are amphibians. No amphibians live in deserts. Which follows?

Accepted Answer

No frogs live in deserts

Answer

Some frogs live in deserts

Answer

All amphibians are frogs

Answer

Some desert animals are frogs

Question 4

Argument: 'If we ban assault rifles, next they'll ban all guns, then knives, then forks.' This is which fallacy?

Accepted Answer

Slippery slope

Answer

Ad populum

Answer

False dilemma

Answer

Circular reasoning

Question 5

No insects have backbones. All beetles are insects. Which is valid?

Accepted Answer

No beetles have backbones

Answer

Some beetles have backbones

Answer

All backboned animals are beetles

Answer

Some insects are beetles

Question 6

Premises: If you study, you pass. If you pass, you celebrate. Anna studied. What follows?

Accepted Answer

Anna celebrates

Answer

Anna does not pass

Answer

Anna does not celebrate

Answer

Nothing follows

Question 7

All fast cars are expensive. Some red cars are fast. Which is valid?

Accepted Answer

Some red cars are expensive

Answer

All red cars are expensive

Answer

No red cars are expensive

Answer

All expensive cars are red