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A bag contains 2 red marbles, 7 blue marbles and 4 green marbles. If two marbles are drawn out of the bag, what is the probability, to the nearest 10ooth, that both marbles drawn will be red?
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A bag contains 22 red marbles, 77 blue marbles and 44 green marbles. If two marbles are drawn out of the bag, what is the probability, to the nearest 1010ooth, that both marbles drawn will be red?\newlineAnswer:

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Q. A bag contains 22 red marbles, 77 blue marbles and 44 green marbles. If two marbles are drawn out of the bag, what is the probability, to the nearest 1010ooth, that both marbles drawn will be red?\newlineAnswer:
  1. Calculate Total Marbles: Given: A bag contains 22 red marbles, 77 blue marbles, and 44 green marbles. We need to calculate the probability of drawing 22 red marbles in succession without replacement.\newlineFirst, calculate the total number of marbles in the bag.\newlineTotal marbles = 22 red + 77 blue + 44 green\newlineTotal marbles = 1313
  2. First Red Marble Probability: Calculate the probability of drawing the first red marble.\newlineProbability of first red marble = Number of red marbles / Total number of marbles\newlineProbability of first red marble = 213\frac{2}{13}
  3. Second Red Marble Probability: Calculate the probability of drawing the second red marble after the first one has been drawn.\newlineNow there is 11 red marble left and the total number of marbles in the bag is 1212.\newlineProbability of second red marble == Number of red marbles left // Total number of marbles left\newlineProbability of second red marble =112= \frac{1}{12}
  4. Combined Probability: Calculate the combined probability of both events happening one after the other (drawing two red marbles in succession).\newlineCombined probability = Probability of first red marble ×\times Probability of second red marble\newlineCombined probability = (213)×(112)(\frac{2}{13}) \times (\frac{1}{12})\newlineCombined probability = 2156\frac{2}{156}\newlineCombined probability = 178\frac{1}{78}
  5. Express Probability: To express the probability to the nearest thousandth, we can leave the fraction as is or convert it to a decimal.\newlineProbability to the nearest thousandth = 1780.013\frac{1}{78} \approx 0.013 (rounded to three decimal places)

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