A bag contains 5 red balls, 3 blue balls, and 2 green balls. If one ball is drawn at random, what is the probability that it is NOT blue?
Answer and explanation
Correct answer: A.
.
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The probability of drawing a non-blue ball is .
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The probability of drawing a non-blue ball is .
- Step 1: Find the total number of balls in the bag :
- Step 2: Determine the number of favorable balls that are not blue (red or green) :
Answer
.
Why not the others: The fractions frac{3}{10}, frac{1}{2}, and frac{4}{5} represent the probability of drawing blue, red, or other incorrect event subsets.
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