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If you have 2 white marbles and 6 black marbles how many marbles will you have to take out to get a black marble?
Wiki User
∙ 13y ago
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.
Wiki User
∙ 13y ago
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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.
What is the probability of choosing a marble that is not blue?
it depends how many blue marbles there are and how many marbles total.
How do you Write a combination problem and solve it?
A combination problem essentially asks for two answers from different mathematical areas. A simple example could be, "A boy has a bag of marbles. Four marbles are blue. Three marbles are red. Five marbles are white. How many marbles does he have all together? What are the chances of picking a blue marble at random?" The two areas being addressed are simple addition and probability. There are a total of 12 marbles. There is a 1:3 chance of picking a blue marble at random.
Are marbles magnetic?
Not if it is a glass marble, but you can get metal marbles which would be magnetic in many cases.
In the beginning Jay had 3 times as many marbles as Mar After Jay lost 110 marble Mar had twice as many marbles as Jay How many marbles did they have altogether at first?
They had altogether at first 176 marbles (Mar has 44 and Jay has 132).
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 you have 50 black marbles and 50 white marbles in a bag at most how many times would you have to draw out a marble to get two the same colour?
The maximum number of marbles you have to draw is three. 1) Draw a marble. It is either white or black. 2) Draw a second marble. If it is the same colour as the first marble, we are done after two draws. 3) Otherwise, the drawn marbles have different colours. Draw a third marble. No matter what you draw next, you must have two marbles of the same colour.
a bag contains 150 marbles some of the marbles are blue and the rest of the marbles are white in the bag there are 21 blue marbles for every 4 white marbles how many of each color marble blue and white are in the bag show or explain your thinking?
a bag contains 150 marbles some of the marbles are blue and the rest of the marbles are white in the bag there are 21 blue marbles for every 4 white marbles how many of each color marble blue and white are in the bag show or explain your thinking
What is the probability of drawing a marble that is not white?
It depends on how many marbles of each colour you have....
A bag with 5 red marbles and 5 white marbles if you pull one marble from the bag how many possible outcomes are there?
Two.
Where is the most beautiful stone Marble extracted in Pakistan?
Large reserves of marbles are found in Baluchistan, the largest province of Pakistan area vise. White and black marble is exported from Pakistan to many countries.
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.
What is the probability of choosing a marble that is not blue?
it depends how many blue marbles there are and how many marbles total.
How do you Write a combination problem and solve it?
A combination problem essentially asks for two answers from different mathematical areas. A simple example could be, "A boy has a bag of marbles. Four marbles are blue. Three marbles are red. Five marbles are white. How many marbles does he have all together? What are the chances of picking a blue marble at random?" The two areas being addressed are simple addition and probability. There are a total of 12 marbles. There is a 1:3 chance of picking a blue marble at random.
How many marbles can you fit in 1 cubic foot?
It depends on the size of the marble.
Are marbles magnetic?
Not if it is a glass marble, but you can get metal marbles which would be magnetic in many cases.
In the beginning Jay had 3 times as many marbles as Mar After Jay lost 110 marble Mar had twice as many marbles as Jay How many marbles did they have altogether at first?
They had altogether at first 176 marbles (Mar has 44 and Jay has 132).
