A girl's name is "Olivia Summer" so her initials are OS.

(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

Ineed ! the person who answers and shows their work on they got the answer first will be marked the !

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?