Please help! I will mark as brainliest IF answer is right. <3

(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

Acredit card advertises an annual interest rate of 23%. what is the equivalent monthly interest rate?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)