94 is decreased to 86. What is the percentage by which the number was decreased, to the nearest tenth of a percent?

1/3(x-10)=-4 solve for x with steps

Pls , the question is in the picture!

(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