Prove that if is a family of subgroups of a group G, thenis a subgroup of G.

Intro to Statistics 4.4 Probability & The Multiplication Rule Chapter 4 begins our discussion of probability. In section 1 &2 we learned the basics of probability and in section 3 we learned the addition rule. This section continues our discussion of probability with the multiplication rule,used when you want to ﬁnd the probability of Event A AND Event B happening....