PrepTest 63, Section 1, Question 21
A street entertainer has six boxes stacked one on top of the other and numbered consecutively 1 through 6, from the lowest box up to the highest. Each box contains a single ball, and each ball is one of three colors�green, red, or white. Onlookers are to guess the color of each ball in each box, given that the following conditions hold:
A street entertainer has six boxes stacked one on top of the other and numbered consecutively 1 through 6, from the lowest box up to the highest. Each box contains a single ball, and each ball is one of three colors�green, red, or white. Onlookers are to guess the color of each ball in each box, given that the following conditions hold:
A street entertainer has six boxes stacked one on top of the other and numbered consecutively 1 through 6, from the lowest box up to the highest. Each box contains a single ball, and each ball is one of three colors�green, red, or white. Onlookers are to guess the color of each ball in each box, given that the following conditions hold:
A street entertainer has six boxes stacked one on top of the other and numbered consecutively 1 through 6, from the lowest box up to the highest. Each box contains a single ball, and each ball is one of three colors�green, red, or white. Onlookers are to guess the color of each ball in each box, given that the following conditions hold:
There are more red balls than white balls.
There is a box containing a green ball that is lower in the stack than any box that contains a red ball.
There is a white ball in a box that is immediately below a box that contains a green ball.
Which one of the following must be true?
There is a green ball in a box that is lower than box 4.
There is a green ball in a box that is higher than box 4.
There is a red ball in a box that is lower than box 4.
There is a red ball in a box that is higher than box 4.
There is a white ball in a box that is lower than box 4.
Explanations
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