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In a certain Algebra 2 class of 24 students, 13 of them play basketball and 5 of them play baseball. There are 8 students who play neither sport. What is the probability that a student chosen randomly from the class plays both basketball and baseball?
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In a certain Algebra 22 class of 2424 students, 1313 of them play basketball and 55 of them play baseball. There are 88 students who play neither sport. What is the probability that a student chosen randomly from the class plays both basketball and baseball?\newlineAnswer:

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Q. In a certain Algebra 22 class of 2424 students, 1313 of them play basketball and 55 of them play baseball. There are 88 students who play neither sport. What is the probability that a student chosen randomly from the class plays both basketball and baseball?\newlineAnswer:
  1. Define Variables: Let's denote the total number of students in the class as TT, the number of students who play basketball as BB, the number of students who play baseball as SS, and the number of students who play neither sport as NN. We are also looking for the number of students who play both sports, which we will denote as BSBS. We are given the following: T=24T = 24 (total students) B=13B = 13 (students playing basketball) S=5S = 5 (students playing baseball) N=8N = 8 (students playing neither sport) We need to find BSBS (students playing both sports).
  2. Find Students Playing Sports: First, let's find out how many students play at least one sport. Since there are 88 students who play neither sport, the number of students who play at least one sport is TNT - N.\newlineSo, the number of students playing at least one sport is 248=1624 - 8 = 16.
  3. Use Inclusion-Exclusion Principle: Now, let's use the principle of inclusion-exclusion to find the number of students who play both sports. The principle of inclusion-exclusion states that for any two sets, the number of elements in at least one of the sets is equal to the sum of the number of elements in each set minus the number of elements in both sets.\newlineSo, the number of students playing both sports is B+S(number of students playing at least one sport)B + S - (\text{number of students playing at least one sport}).\newlineWe can calculate B+SB + S as 13+516=213 + 5 - 16 = 2.
  4. Calculate Probability: Now that we know there are 22 students who play both basketball and baseball, we can find the probability that a randomly chosen student from the class plays both sports. The probability is the number of students who play both sports divided by the total number of students.\newlineSo, the probability is BST=224\frac{BS}{T} = \frac{2}{24}.
  5. Simplify Fraction: Finally, we simplify the fraction 224\frac{2}{24} to its simplest form by dividing both the numerator and the denominator by their greatest common divisor, which is 22. So, the simplified probability is 112\frac{1}{12}.

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