一个简单的英语题
a card is drawn at random from a pack of 52.
what is the probability of selecting a card numbered
2,3,4,5,6,7,8,9,or10
参考答案:9/13
因为每种花色的牌有13张
2-10占了9张
那么抽到2-10的号码牌的几率当然就是9/13了。(36/52=9/13)
明白了没……
a card is drawn at random from a pack of 52.
what is the probability of selecting a card numbered
2,3,4,5,6,7,8,9,or10
参考答案:9/13
因为每种花色的牌有13张
2-10占了9张
那么抽到2-10的号码牌的几率当然就是9/13了。(36/52=9/13)
明白了没……