Can anyone help me with this problem

(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

Using the quadratic formula find the zeros of the given polynomial -5x^2+3x-11

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package