I need to know how to divide with fractions 1/5 divided by 1/10-10/2

(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

Given ab and cb are tangents of p, and m =10°. what is the measure of abp?

Solve each quadratic equation by factoring and using the zero product property. 14x - 49 = x^2