At the veterinarian’s office, 4 animals out of every 5 seen were cats. A total of 35 animals were seen. How many cats were seen?

(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. i can't figure out this question. give an explanation too. .

What is the unit rate of, 75% high fiber chimp food to 25% high protein chimp food.