GRT GRT Logical Reasoning 1

Question 1

If all Bloops are Razzies, and all Razzies are Lazzies, which of the following must be true?

Accepted Answer

All Bloops are Lazzies

Answer

By transitivity: if Bloops ⊆ Razzies and Razzies ⊆ Lazzies, then Bloops ⊆ Lazzies.

Question 2

What number comes next in the sequence: 3, 6, 12, 24, 48, ?

Accepted Answer

96

Answer

Each term is doubled: 3×2=6, 6×2=12, 12×2=24, 24×2=48, 48×2=96.

Question 3

In a logic puzzle, P implies Q, and Q implies R. If R is false, what can be concluded?

Accepted Answer

P is false

Answer

By contrapositive: if R is false, then Q is false (since Q→R); if Q is false, then P is false (since P→Q).

Question 4

Four employees — Alice, Bob, Carol, and Dan — sit in a row. Alice is not next to Bob. Carol sits at one end. Dan sits next to Alice. Who can sit at the other end?

Accepted Answer

Bob

Answer

With Carol at one end and Dan next to Alice, placing Bob at the other end satisfies the constraint that Alice is not next to Bob.

Question 5

Which of the following is logically equivalent to 'If it rains, the ground is wet'?

Accepted Answer

If the ground is not wet, it did not rain

Answer

The contrapositive of 'If P then Q' is 'If not Q then not P,' which is logically equivalent to the original statement.

(GRT) Graduate Recruitment Test Practice Test

(GRT) Graduate Recruitment Test Practice Test

GRT GRT Logical Reasoning 1