What is t times 4 subtracts s

Due to a packaging error, 4 cans labeled diet soda were accidentally filled with regular soda and placed in a 12 pack carton of diet soda. two cans were randomly selected from this 12 pack. what is the probability that both cans were regular soda?

Asingle die is rolled twice. find the probability of rolling a 3 the first time and a 2 the second time

7x^2-9x+5=0 find the discriminant and number of real solutions