probability intro

Question

A jar contains 10 red marbles numbered 1 to 10 and 6 blue marbles numbered 1 to 6. A marble is drawn at random from the jar. Find the probability that the marble is blue or even-numbered. {Give a reduced fraction or a decimal with at least 5 decimal places, if needed.}



Answer 1

To find probability: divide number of desired events by the number of possible events.

P(even or blue) = Number of blue + number of evens that are not blue = 6 + 5

The total possible events: 16 for a single draw.

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