Which game is not fair?

spinning a spinner that is half red and half blue
flipping a coin
drawing a marble from a bag of 12 red and 12 blue marbles
choosing the correct number between 1 and 10

Question

Which game is not fair?

spinning a spinner that is half red and half blue
flipping a coin
drawing a marble from a bag of 12 red and 12 blue marbles
choosing the correct number between 1 and 10

anonymous · Answer

I think it would be Flipping a coin, because you don't know if its going to flip on heads or tails.

anonymous · Answer

only two things to determine if a game is fair, expected value or relative frequency

anonymous · Answer

the first 3 have a 50:50 chance, the last one has a range of values

anonymous · Answer

each choice in the last one is equally likely, with p=1/10

justuu · Answer

Is it `choosing the correct number between 1 and 10` ?