Out of a class of 8 boys and 4 girls, a group of 7 people is chosen at random.
Find the probability that the group of 7 includes one particular boy.
Find the probability that the group of 7 includes at least 2 girls.

1- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis.2- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in the first question?