RE: Puzzle Contest #11 - First to get all the correct answers wins 10 SBD, all attempts will receive an upvote.

1a) 72
1b) 24
1c) 48

i) 1 (Euler's number)
ii) 11 (20-9)
iii) Bill should bet $42 on Sprinter E. This gives a Bill 96% chance of winning