The total number of marbles in the jar is 10 + 50 + 40 = 100.
The probability of selecting a red marble is 10/100 = 1/10.
The probability of selecting a green marble is 40/100 = 2/5.
Therefore, the probability of selecting either a red or green marble is:
P(red or green) = P(red) + P(green) = 1/10 + 2/5 = 1/10 + 4/10 = 5/10 = 1/2
So, the theoretical probability of selecting either a red or green marble is 1/2.
A marble is selected at random from a jar containing 10 red marbles, 50 yellow marbles, and 40 green marbles. Find the theoretical probability that it is either red or green.
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Part 1
P(red or green)equals
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