Can someone help me with the first two I wasn’t at school when they did this sorry.

(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

Drag the tiles to the correct boxes to complete the pairs. label each function. as even , odd, or neither.

What is the product? a-3/15a × 5/a-3