0000:00:00:00:00Start13Number 13ExplanationConsider the following illustration! Two marbles will be placed into boxes, with the condition that one box can only hold one marble. The probability that the marbles are stored not adjacent to each other is ....12\frac{1}{2}2113\frac{1}{3}3123\frac{2}{3}3214\frac{1}{4}4134\frac{3}{4}43
13Number 13ExplanationConsider the following illustration! Two marbles will be placed into boxes, with the condition that one box can only hold one marble. The probability that the marbles are stored not adjacent to each other is ....12\frac{1}{2}2113\frac{1}{3}3123\frac{2}{3}3214\frac{1}{4}4134\frac{3}{4}43