To find the probability of picking a marble that is red or blue, we need to first calculate the total number of marbles that are either red or blue.
From the given information, we know that there are 2 red marbles, 5 blue marbles, and 1 marble that is both red and blue. Therefore, the total number of red or blue marbles is:
2 (red) + 5 (blue) - 1 (red and blue) = 6
So, there are 6 marbles that are red or blue out of a total of 8 marbles.
The probability of picking a marble that is red or blue is:
Number of favorable outcomes / Total number of outcomes
= 6 / 8
= 3 / 4
= 0.75
Therefore, the probability of picking a marble that is red or blue is 0.75 or 75%.
there are 8 marbles there are 2 have the color red 5 have the color blue 1 has red AND blue. whats the probability of picking one thats red OR blue
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