Similar triangles practice worksheet for problems 1-5 below identify if the triangles are similar or not

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 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

W-16=-12 solve each one step equation plz