If a mother's first child is born before its due date, it is likely that her second child will be also. Jackie's seco...

With conditionals, you can get the contrapositive. with some statements, you can reverse; with most statements, you can reverse if you change the most to some. I know this wasn't featured in this question, but the explanation says you "get what you get" with a most statement, which is misleading because there IS something to infer from a most statement: if A most B, then B some A.