题目

Tarik has a pile of 6 green chips numbered 1 through 6 respectively and another pile of 6 blue chips numbered 1 through 6 respectively. Tarik will randomly pick 1 chip from

the green pile and 1 chip from the blue pile.

Quantity A

The probability that both chips selected by Tarik will display a number less than 4.

Quantity B

选项

A.

Quantity A is greater.

B.

Quantity B is greater.

C.

The two quantities are equal.

D.

The relationship cannot be determined from the information given.

解析

在这道题中,Tarik不是从12个筹码中随机抽1个。他的操作是:先从6个绿色筹码中抽1个,再从6个蓝色筹码中抽1个。 绿色筹码中有3个数字小于4,因此抽到数字小于4的绿色筹码的概率为 3/6。 同理,抽到数字小于4的蓝色筹码的概率也为 3/6。 因此,量A等于 3/6*3/6=1/2*1/2=1/4 量B更大。
在线客服
官方微信
公众号