Pls help me I don’t get it

(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

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

One positive number is 9 more than twice another. if their product is 95, find the numbers