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Sagot :
Answer: 19/24
Explanation:
From the information given,
Number of green marbles = 15
Number of red marbles = 9
Total number of marbles = 15 + 9 = 24
Probability is expressed as
number of favorable outcomes/number of total outcomes
Probability f selecting a greeen marble = 15/24
Even numbers divide 2 without a remainder. The even numbered marbles are
red = 2, 4, 6, 8
green = 2, 4, , 68, 10, 12, 14
Total number of even numbered marbles = 11
Probability of selecing an oevennumber = 10124
The events are not mutually exclusive becuse they can occur together. For two ebvents, A and B that are not mutually exclusive,
P(A U B) = P(A) + P(B) - P(A and B)
Thus,
the probability that the marble is green or even numbered = Probability of selecting a green marble + Probability of selecting an even number - Probability of selecting a green and even numbered marble
Number of green even numbere marble s = 7
Probability of selecting a green and even numbered marble = 7/24
Thus,
the probability that the marble is green or even numbered = 15/24 + 11/24 - 7/24
the probability that the marble is green or even numbered = 19/24
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