Okay, I need help with this one..

Both parts please.

(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

The step function g(x) is defined as shown.what is the range of g(x)? ***answer choices in picture.

Twice the sum of a number and 4 is equal to three times the difference of the number and 7. find the number.