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A pouch contains 59 green beads 78 red beads and 50 yellow beads How many blue beads should be added so that the probability of drawing a red bead is one third?
Wiki User
∙ 14y ago
For the probability of drawing a red bead to be one third then one third of the bead would need to be red. The number of red beads is 78 so twice as many should be 'not red' (156), at present the 'not red' beads (yellow and green) total 109, so to make the number up to the required 156 a further 47 beads need to be added so the number of blue beads needed is 47.
Wiki User
∙ 14y ago
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A bag contains green and yellow tiles You pick 2 tiles without replacing the first one The probability that the first tile is yellow is 35 The probability of drawing 2 yellow tiles is 1235?
What is the probability that the second tile you pick is yellow? (didnt have enough space to finish the question)
A bag contains 3 white marbles 7 green marbles and 5 yellow marbles What is the probability of drawing a yellow marble?
5/15 = 1/3 = 33 and 1/3 percent
If an urn contains 6 yellow balls 3 red balls and 5 blue balls If 2 balls are drawn without replacement what is the probability of drawing 2 yellow balls?
The probability is (6/14)*(5/13) = 30/182 = 0.1648 approx.
A bag contains 2 yellow 12 red and 6 green marbles What is the probability of selecting a red marble replacing it then selecting another red marble?
The probability of drawing two reds, with replacement, is the same as the probability of drawing a red, times itself. So: P(drawing two reds) = P(drawing a red)2 = (12/(2 + 12 + 6))2 = (12/20)2 = (3/5)2 = 9/25
There are 2 red marbles 3 yellow marbles and 5 blue marbles in a bag determine the probability of drawing a yellow marble from the bag?
3 in 10
A box contains five blue eight green and three yellow marbles If a marble is slected at random what is the probability that it is yellow?
3/16
A bag contains 7 red 10 blue and 3 yellow balls If a ball is drawn at random what is the probability that a blue ball is drawn?
20 marbles total, 10 of which are blue so, odds of drawing blue are 10/20=.5=50%
A box contains five blue eight green and three yellow marbles If a marble is slected at random what is the probability that it is not blue?
11/16
What if there are 5 blue marbles 3 red marbles 5 white marbles and 7 yellow marbles in a bag determine the probability of not drawing a yellow one from the bag?
5, 3, 5, and 7 make a sum of 20. So 7/20 would be the probability of find a yellow one. Then, subtract 7 from 20 to find the probably of not finding a yellow one, which is 13/20, or 65%
In a bag containing 6 purple marbles 19 green marbles 5 blue marbles 19 yellow marbles and 17 red marbles what is the probability of pulling out a yellow marble?
Total number of marbles in the bag = 6 + 19 + 5 + 19 + 17 = 66Number of yellow ones = 19If drawing perfectly randomly, then the probability of pulling a yellow one = 19/66 = 28.8% (rounded)
There are 2 red marbles 3 yellow marbles and 5 blue marbles in a bag determine the probability of drawing a red marble from the bag?
20% (or 2 in 10 chance)
A box contains 3 yellow 2 blue and 4 red pencils suppose you choose a pencil replace then choose another Find the probability of choosing yellow then red?
4/27
