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A bag of the same size small balls contains 6 blue balls, 5 red balls, 5 yellow balls, and 4 green balls. What is the probability of selecting a blue or green ball on the first draw?
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Nov 20, 2023
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A bag of the same size small balls contains 6 blue balls, 5 red balls, 5 yellow balls, and 4 green balls. What is the probability of selecting a blue or green ball on the first draw?
Mathematics
college
Hans Petter Naumann
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Hans Petter Naumann
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Answer: 10/20, or 50% or .5
Explanation: We first need to add up all of the balls in the bag to get our denominator.
6 + 5 + 5 + 4 = 20
We then need to determine how many blue and green balls there are in total for our numerator.
6 blue balls + 4 green balls = 10.
So our answer is 10/20. Now we need to simplify. We need to get the greatest common multiple of 10 and 20. 10 is the greatest common multiple. We now need to divide each side by 10 to get our simplest form. 10/10 is 1 and 20/10 is 2.
Our final answer because of this is 1/2. I have converted it to a percent and a decimal. You may probably know that 1/2 is 50% and that 50% is .5 so I’ll spare you the explanation for that. Hope this helps!
Sarnold
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Nov 25, 2023
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Sarnold
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