A bag contains 10 red marbles, 7 white marbles, and 5 blue marbles. You draw 5 marbles out at random, without replacement. What is the probability that all the marbles are red? The probability that all the marbles are red is . What is the probability that exactly two of the marbles are red? The probability that exactly two of the marbles are red is . What is the probability that none of the marbles are red? The probability of picking no red marbles is .
A bag contains 10 red marbles, 7 white marbles, and 5 blue marbles. You draw 5 marbles out at random, without replacement. What is the
The probability that all the marbles are red is .
What is the probability that exactly two of the marbles are red?
The probability that exactly two of the marbles are red is .
What is the probability that none of the marbles are red?
The probability of picking no red marbles is .
Introduction:
According to the combination rule, if r distinct items are to be chosen from n items without replacement, in such a way that the order of selection does not matter, then the selection can be made in (nCr) = n! / [r! (n – r)!] = [n (n – 1) … (n – r + 1)] / r! ways.
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