The Polar Express picked Billy up at 11:35. The train was derailed at the frozen lake for 47 minutes. If it takes two hours and twenty-nine minutes to get from Billy's house to the North Pole, what time would they arrive at the North Pole?

(a) (8%) compute the probability of an even integer among the 100 integers 1! , 2! , 3! , until 100! (here n! is n factorial or n*(n-1)*(n-2) *… 1) (b) (16%) compute the probability of an even integer among the 100 integers: 1, 1+2, 1+2+3, 1+2+3+4, …., 1+2+3+… + 99, and 1+2+3+… + 100

Which of the following can be used to explain a statement in a geometric proof?

The tile along the edge of a triangular community pool needs to be replaced? ?