PI Logical Deduction Problems 3

Question 1

A is taller than B. B is taller than C. C is taller than D. Who is the shortest?

Accepted Answer

D

Answer

A

Answer

B

Answer

C

Question 2

If the alarm is on, the door is locked. If the door is locked, no one can enter. The alarm is on. What follows?

Accepted Answer

No one can enter

Answer

Someone can enter

Answer

The door might be open

Answer

The alarm may turn off

Question 3

Exactly three people — X, Y, Z — are standing in a line. X is not first. Z is not last. Y is not second. What is the order?

Accepted Answer

Z, X, Y

Answer

X, Y, Z

Answer

Y, Z, X

Answer

Z, Y, X

Question 4

All A are B. No B are C. Therefore:

Accepted Answer

No A are C

Answer

Some A are C

Answer

All C are A

Answer

Some B are A

Question 5

Five tasks must finish before task 6. Tasks 1 and 3 depend on task 2. Task 2 depends on task 4. What must be done first?

Accepted Answer

Task 4

Answer

Task 1

Answer

Task 3

Answer

Task 6

Question 6

Either the report is late or the data is incorrect — but not both. The report is not late. What is true?

Accepted Answer

The data is incorrect

Answer

The data is correct

Answer

Both conditions are false

Answer

The report may still be late

Question 7

P implies Q. Q implies R. R is false. What can be deduced?

Accepted Answer

P is false

Answer

P is true

Answer

Q is true

Answer

R may still be true