How many grams of a 10% cream must be mixed with 2% cream to prepare 60 grams of a 5% cream?

(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

Xy x xy if a and b are positive integers such that a*b=9 and b*a=72 what is the value of a/b

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250