Question

What is the expectation for the $1 bets on a U.S. roulette wheel? See the figure. (Round your answer to the nearest cent.)
Three-number bet

Thank you

Answer 1

Using the figure, It say this type of bet pays 11 to 1. So the answer equals $11(3/38)+($-1)(35/38)-$0= -0.0526. Which rounds to -0.05.

Answer 2

what about a six number bet?