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Button Tin #1

Easy

ProbabilityCombinatorics

A tin contains 6 brass buttons and 9 pearl buttons. You draw 4 buttons one at a time, uniformly at random and without replacement.

What is the probability that the first two buttons are brass and the last two are pearl? Give an exact fraction in lowest terms.

Your answer

Enter a number, fraction, or mathematical expression.

Discussion (0)

Easy

ProbabilityCombinatorics

A tin contains 6 brass buttons and 9 pearl buttons. You draw 4 buttons one at a time, uniformly at random and without replacement.

What is the probability that the first two buttons are brass and the last two are pearl? Give an exact fraction in lowest terms.

Your answer

Enter a number, fraction, or mathematical expression.

Discussion (0)