Kareem worked 2,016 hours last year. he worked the same number of hours per week for 48 weeks. how many hours did he work per week?

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

(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

Prove that the value of the expression 7^8–7^7+7^6 is divisible by 43.