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What belongs in each mystery box?
Every mystery box holds the same value. Make the two sides balance.
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In a club, 11 students play chess, and 7 of those chess players also play a musical instrument. Given that a student chosen at random plays chess, what is the conditional probability that they also play a musical instrument, as a simplified fraction?
Calculate conditional probability from subgroup counts and express the result as a simplified fraction.
0 of 4 solved in this round
Featured, challenges & worksheets in Reasoning
Conditional probability tables
Calculate conditional probability from subgroup counts and express the result as a simplified fraction.
Boolean logic evaluation
Evaluate compound Boolean expressions using NOT, AND and OR operators.
Ordered permutations P(n, 2)
Calculate ordered two-element permutations P(n, 2) = n(n − 1) from a set of distinct candidates.