The sample space of an experiment would be the set of all possible outcomes. If you are reaching your hand into a bag and pulling out a marble at random, the outcomes will either be (red)(red)(yellow)(yellow)(yellow)(yellow)(yellow). This gives seven different options. This will obviously change each time a marble is removed or added.
3 in 10
20% Total marbles = 35 + 85 + 30 = 150 Yellow marbles = 30 Percentage yellow marbles = number_of_yellow / total_number x 100 % = (30 / 150) x 100 % = 1/5 x 100 % = 20%
20% (or 2 in 10 chance)
The probability of pulling a red or yellow marble out of a bag of 3 green 8 red 8 yellow and 3 black marbles is 16 out of 22, or about 0.73.
24 red marbles
Use this formula - 100 * red / (blue+red+yellow).
He has a number of yellow marbles that leaves a reminder of 2 when divided by 3 and is a number smaller than 22. That is the number of yellow marbles = 2(mod 3).
3 in 10
5 becaese you will get blue
20% Total marbles = 35 + 85 + 30 = 150 Yellow marbles = 30 Percentage yellow marbles = number_of_yellow / total_number x 100 % = (30 / 150) x 100 % = 1/5 x 100 % = 20%
1:4. The red marbles are an unnecessary complication. who wouldwanna take the time to actually think thru this question...
0No blue marbles in the bag.
20% (or 2 in 10 chance)
The probability of pulling a red or yellow marble out of a bag of 3 green 8 red 8 yellow and 3 black marbles is 16 out of 22, or about 0.73.
There are 15 blue marbles, 8 yellow marbles and 27 red marbles for a total of 50 marbles. Since there are no green marbles in the lot, It is impossible to pull a green marble from the lot. The is no probability whatsoever! "There just ain't no green ones to pull."
2/9
The probability of selecting a red marble is 3/9