Everything goes ok until one day, for an unknown reason, he finds over the table 3 pills, 2 "a" pills missing from the "a" bottle, and 1 missing from the "b" bottle, which obviously means that 2 of the 3 pills on the table are "a" pills and the other one is a "b" pill. If he takes 2 pills of the same kind, he will die, and there is no way to difference them, but, this man found a way to take the three pills without dying.
How did he do it?
