中国农业银行
单选题在果箱中有x个苹果和y个橘子,从果箱中随机取出一个水果,取得苹果的概率是2/5。如果再放进6个橘子,取得苹果的概率是1/4。则原来盒中有橘子( )个。
A.6
B.7
C.8
D.9
参考答案:A进入在线模考
【答案】A。解析:从果箱中随机取出一个水果

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