one out of nine
1 in 52
It is 1248/57120 = 13/595 = 0.0218 approx.
5/10
The theoretical probability of randomly picking each color marble is the number of color marbles you have for each color, divided by the total number of marbles. For example, the probability of selecting a red marble is 3/20.
Since the box contains 16 marbles, seven of them white, then the probability of drawing one white marble is 7/16. If you replace the marble and draw again, the probability of drawing another white marble is still 7/16. The net probability of drawing two white marbles, while replacing the first, is 49/256.
1 in 52
2/6
The probability is 0.3692
It is 1248/57120 = 13/595 = 0.0218 approx.
There is a probability of 3 that it will be blue.
7
5/10
The probability is 100%.There's no way to take four marbles out of this bag without at least one of them being white.
3 in 10
Number of different possible choices = 8 + 6 + 9 = 23Number of available successful choices (blue marbles) = 6Probability of success = 6/23 = 0.26087 = 26.087 %(rounded)
a black one
The theoretical probability of randomly picking each color marble is the number of color marbles you have for each color, divided by the total number of marbles. For example, the probability of selecting a red marble is 3/20.