1) If you flip a coin three times, what is the probability of landing on tails all three times? a) 1/2 b) 1/4 c) 1/6 d) 1/8 2) If you roll a pair of dice what is the probability of rolling a pair of sixes? a) 1/36 b) 1/12 c) 1/6 d) 1/2 3) If you have three cards, one says 4, one says 5 and one says 6 and you select one at random, what is the probability of selecting the 5? a) 1/5 b) 1/3 c) 1/15 d) 1/2 4) If you have 9 marbles and 3 are red, 3 are yellow and 3 are blue and you select one at random, what is the probability of selecting a blue marble? a) 1/3 b) 1/6 c) 1/9 d) 1/27 5) If you have 9 marbles and 3 are red, 3 are yellow and 3 are blue and you select a pair at random, what is the probability of selecting a blue and then a red? a) 1/9 b) 1/12 c) 1/72 d) 1/81

Practice probability.

由
嵌入

排行榜

視覺風格

選項

切換範本

恢復自動保存: ?