A Box Contains 20 Red Marbles And 30 Blue Marbles

A second box contains 10 white marbles and 40 black marbles.

A box contains 20 red marbles and 30 blue marbles.

If you remove marbles one at a time randomly what is the minimum number that must be removed to be certain that you have at least 2 marbles of each colour. 4 red 6 white and 10 blue. Two marbles are drawn without replacement from a jar containing 4 black and 6 white marbles. A jar contains 20 marbles.

Two marbles are drawn without replacement. This can then be simplified to 2 3 by a factor of 2. A box contains 20 red marbles and 30 blue marbles. B find probabilities for p bb p br p rb p ww p at least one red p exactly one red 3.

3 10 0 3 explanation. Express your answer as a simplified fraction or a decimal rounded to four decimal places. 4 number of possible events number of total marbles 20 30 10 40 100 5 probability 40 100 2 5 0 4 question 2. A box contains 47 red marbles 56 white marbles and 59 blue marbles.

Solving part a to solve part a of this problem first considered the. 6 a box contains 30 marbles. If a marble is drawn at random the probability of picking a blue marble is 38. 5 marbles are to be chosen from 60 10 red 20 blue 30 green hence n s 60c5 let a be the event that all are blue hence out of 20 blue marbles 5 will be chosen n a 20c5 p a misc 1 a box contains 10 red marbles 20 blue marbles and 30 green marbles.

If a marble is randomly selected from the box what is the probability that it is not white. Find the probability that both marbles are red. Find the probability of first selecting a blue then a green marble. Estimate the probability of drawing 1 yellow marble from a box that contains 60 red marbles 120 blue marbles 30 green marbles and 90 yellow marbles.

A draw the tree diagram for the experiment. The ratio of 4 blue marbles to 6 white marbles can be said as 4 6 4 to 6 or 4 6. A two marbles are selected with replacement. A jar contains 4 black marbles and 3 red marbles.

15 red 10 blue and 5 green. If you choose one marble from each box without looking what is the probability that you get a blue marble and a black marble. A box contains 40 red and blue marbles.