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There are 4 red 4 black and 4 white marbles in a box how many do you have to take out without looking to be sure you have 2marbles of the same color?
Wiki User
∙ 11y ago
4:
Because there will be at least 1 of two kinds of marbles, and 2 of the other.
Ex: 1 black, 1 red, and 2 whites.
Wiki User
∙ 11y ago
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In a bag of 7 black marble 8 red marbles and 6 green marbles what is the least number of marbles you must pick without looking to guarantee two marbles of the same color?
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If there are 3 black marbles 2 white marbles and 1 red marble what is the probability of selecting a black marble?
3/6 or 1/2 or 50%
If A jar contains 5 yellow marbles 16 green marbles and 8 black marbles If one marble is selected at random what is the probability that it is not green?
1 in 52
Suppose there are three white marbles and three black marbles in a bag and you want to remove two marbles What is the probability that you will select a white marble and then a black marble Express?
3/6 * 3/5 = 6/30 or 1/5 so you have a 20% chance of pulling a white and then black marble.
What are the odds in favor of choosing a white marble from a bag containing 3 black marbles 4 green marbles and 6 white marbles?
The probability of drawing a white marble is .46
In a bag of 7 black marble 8 red marbles and 6 green marbles what is the least number of marbles you must pick without looking to guarantee two marbles of the same color?
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Assume a jar has 4 red marbles and 5 black marbles?
Assumed.
If you have 2 white marbles and 6 black marbles how many marbles will you have to take out to get a black marble?
The first could be white, the second could also be white, but for the third there are no white left so the third would have to be black. The first or second could be black, but to guarantee at least one black you need to remove 3 marbles.
There are 3 red marbles 7 blue marbles 6 green marbles and 4 black marbles in a bag a marble is randomly selected from the bag the number one fifth represents the probability of selecting what color?
a black one
What is the equation used to determine probability?
Number of possibilities for one category / Total of all possibilities. For example, if I had a bag of marbles where there are three white marbles and two black marbles. The probability of pulling out a white marble is how many white marbles are in the bag which is: three. But the total of things you can draw out of the bag can either be one of the three white marbles or one of the two black marbles. 3 white marbles+ 2 Black marbles= five marbles. Possibility is 3/5 for drawing a white marble.
If a bag contains 4 black 6 green and 2 yellow marbles and one marble is randomly drawn what is the probability that it is not black?
There are 8 marbles that aren't black, out of a total of 12 marbles, so the probability is 8/12 or 2/3.
If there are 3 black marbles 2 white marbles and 1 red marble what is the probability of selecting a black marble?
3/6 or 1/2 or 50%
The ratio of white marbles to black marbles is 7 to 10 of there are 136 marbles in the bag how many marbles are white?
if the balls are in the ratio of 7:10, then in every 7+10 = 17 of them 7 are white and 10 are black. With 136 marbles there are 136 ÷ 17 = 8 lots → there are 8 lots × 7 white/lot = 56 white.
If A jar contains 5 yellow marbles 16 green marbles and 8 black marbles If one marble is selected at random what is the probability that it is not green?
1 in 52
A bag contains 10 black marbles and 10 white marbles Five marbles are drawn and then replaced each time What is the probability of drawing five white marbles in a row?
It is (1/2)5 = 1/32
Suppose there are three white marbles and three black marbles in a bag and you want to remove two marbles What is the probability that you will select a white marble and then a black marble Express?
3/6 * 3/5 = 6/30 or 1/5 so you have a 20% chance of pulling a white and then black marble.
A bag contains 4 red marbles and 3 black marbles You dram one marble look at it and put it back Then you draw one marble again What are your chances of getting 2 black marbles?
3/7*3/7= 9/49
