About/Logic & Brainteasers

Skill 05 / 06

Logic & Brainteasers.

Logical reasoning, weighing & measuring, classic interview puzzles.

What gets tested.

Easy is the definition. Normal combines two. Hard hides which one applies until you've done the work.

Logic puzzles.

Truth-tellers, knights and knaves, age problems.

Weighing.

Odd-one-out in the fewest weighings.

Hat problems.

Sequential reasoning, common knowledge.

100 prisoners.

Loop strategies under random permutation.

Number tricks.

Pigeonhole, parity, modular arguments.

Invariants.

Finding what stays the same across moves.

“The trick isn’t the answer.
The trick is the answer’s shape.”

Take a drill.

Other skills

Five more to sharpen.

Train them in any order. The system targets your level in each.

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