1-a) European Roulette wheels have 37 slots numbered 0 to 36. When the croupier spins the wheel and then spins the ball the other way each slot is equally likely to be the one in which the ball lands. What is the probability the ball lands in 22 on a single spin.

1-b) The Casino at Monte Carlo offers odds of 35 to 1 against the ball landing on 22. What probability of landing on 22 would this correspond to if 35 to 1 were the correct odds?

1-c) How much money does the Casino at Monte Carlo make per euro bet on 22 in the long run.

These three questions are all related. Can anyone please solve these problems for me?

Thank you