Question

Which game isn't fair for two players to play?
A number cube is rolled. Player 1 gets a point for the numbers 3 or less, and player 2 gets a point for the numbers 4 or higher.
A coin is flipped. Player 1 gets a point for heads side up, while player 2 gets a point for tails side up.
A number cube is rolled. Player 1 gets a point for an even number, and player 2 gets a point for an odd number.
A number cube is rolled. Player 1 gets a point for any number that is 3 or higher, and player 2 gets a point for any number less than 3.

Answer 1

Player 2 has a 1 in 3 chance, player 1 has a 2 in 3 chance

Answer 2

Last one is not fair
any no 3 or higher means 3,4,5,6
any number less than 3 means 1,2
So player one has more chances of winning