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E-MathStatistics & ProbabilityMedium

Statistics & Probability

3 generated statistics & probability questions from the PrecisionMaths E-Math bank, each with a full worked solution.

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  1. A bag contains 7 red, 6 blue and 1 green balls. A ball is drawn at random. Find the probability of drawing a green ball. [2]
  2. A bag contains 3 red balls and 3 blue balls. Two balls are drawn at random without replacement. Find the probability that both balls are blue. [2]
  3. The 5 values 5, p, 6, 5, 12 have a mean of 9. Find the value of p. [3]

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