Practice Quiz

SAT Math

Category - Stats and Probability

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A box of candy contains 11 pieces of gummy candy, 13 pieces of gum, 8 truffles, and 9 mints. Sue randomly grabs a piece of gum from the bag. What is the probability that the next piece of candy taken will be a piece of gum or a piece of gummy candy?
  1. 1/2
  2. 12/21
  3. 50/50
  4. 23/40
Explanation
Answer: D - The probability that the next piece of candy taken will be a piece of gum or a piece of gummy candy is 23/40. To find the probability, you must add 12 pieces of gum (13 pieces of gum minus the 1 that she already took) to 11 pieces of gummy candy to get 23. To get 40, you add all pieces of candy minus the 1 that she already took.
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