SOLUTION: A jar contains 12 red marbles numbered 1 to 12 and 6 blue marbles numbered 1 to 6. A marble is drawn at random from the jar. Find the probability of the given event.
A- The marble
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Probability-and-statistics
-> SOLUTION: A jar contains 12 red marbles numbered 1 to 12 and 6 blue marbles numbered 1 to 6. A marble is drawn at random from the jar. Find the probability of the given event.
A- The marble
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Question 1156412: A jar contains 12 red marbles numbered 1 to 12 and 6 blue marbles numbered 1 to 6. A marble is drawn at random from the jar. Find the probability of the given event.
A- The marble is red
B- The marble is red or odd numbered
C- The marble is blue and even numbered Answer by ikleyn(52781) (Show Source):
Notice that the total number of marbles in the jar is 12+6 = 18.
(A). P = = .
(B) The set of preferable marbles consists of 12 red marbles and 3 blue marbles having odd numbers.
So, the probability in this case is P = = = .
(C) There are only 3 such blue marbles, so the probability in this case is
P = = .
