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CEMC Gauss (Grade 7), 2005

Combinatorics Difficulty 1.0 Junior Find the answer Canada

A game is said to be fair if your chance of winning is equal to your chance of losing. How many of the following games, involving tossing a regular six-sided die, are fair?
• You win if you roll a $2$
• You win if you roll an even number
• You win if you roll a number less than $4$
• You win if you roll a number divisible by $3$

(A) $0$ (B) $1$ (C) $2$ (D) $3$ (E) $4$

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