Answer 1a =23 , 1b =7, 1c = 18 Answer 2a = 24 , 2b = 54 , 2c = 9 Answer 3 = E Mary Answer 4a = -5, 4b = 4

Answer 1a. 72 Answer 1b. 24 Answer 1c. 48 Answer 2. 1 (Euler's number) Answer 3. 11 (20-9) Answer 4. Bill should bet $42 on Sprinter E. This gives a Bill 95% chance of winning

Answer 1. D Answer 2. 4 Answer 3a is 133, 3b is 37, 3c is 23, 3d is 146 Answer4. 100m winner is Jeremy, 100m winning time is 12.20 ; 50m winner is Jeremy, 50m winning time is 6.39 Second

Attempt No 1. Answer 1- D Answer 2- 4 Answer 3a- 8, 3b- 21, 3c-115, 3d- 1108 Answer 4- Mike wins the 100m race in 11.67 seconds Jeremy wins the 50m race in 8.38 seconds

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