Ijust need on math period. i need with-15+b=-9 and -104=8x and x-7=13 so if anybody could just me with my math ill be very happy u know like my little toutor

(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

Me with this one question, and i'll upvote the brainliest answer

Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.