Francisco is making an effort to to drink more water, and has set a goal of 2 liters per day. he wants to know the volume of the water bottle he takes to school everyday.

(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

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality