Question 1

What comes next: 2, 6, 12, 20, 30, …?

Accepted Answer

Differences are 4, 6, 8, 10, so the next difference is 12 → 42.

Question 2

If all Bloops are Razzies and all Razzies are Lazzies, then all Bloops are definitely Lazzies.

Accepted Answer

This is a valid syllogism: B ⊆ R ⊆ L, so B ⊆ L.

Question 3

A bat and ball cost $1.10. The bat costs $1 more than the ball. How much is the ball?

Accepted Answer

Ball = x, bat = x+1 → 2x+1 = 1.10 → x = 0.05.

Question 4

Which number is the odd one out: 2, 3, 5, 9, 11?

Accepted Answer

All others are prime; 9 = 3×3.

Question 5

How many times do clock hands overlap in 12 hours?

Accepted Answer

They overlap 11 times, not 12, because the hour hand also moves.

Brain Train: Logic & Focus

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