30.there are 50 Black beans, 50 Red beans and 50 green beans in a jar. waht are the minimum number of beans to be picked to ensurethat atleast 14 of one color are picked?
解:同22题,40颗
请问为什麽不是14颗14颗刚好都拿到一样的 这题看不大懂意思请大家帮忙一下 谢谢
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