Answer: a) The probability that the first marble is red and the second is white.
P = (9/23)(8/22)
b) The probability that both are the same color.
P = 2R + 2W + 2B
P = (9/23)(8/22) + (8/23)(7/22) + (6/23)(5/22)
c) The probability that the second marble is blue.
P = (17/23)(6/22) + 2B (Need to consider both are Blue)
P = .202 + (6/23)(5/22) = .202 + .059 = .261
23 marbles
9/23*8/22, since there is one less marble
That is 72/506 or 0.142
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same color
9/23*8/22 (red)
8/23*7/22 (white)
6/23*5/22 (blue)
The denominator is 506
The numerator is 72+56+30=158
158/506=0.312
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Second marble blue:
3 possibilities
first red and then it is 9/23*6/22
first blue and then it is 6/23*5/22
first is white and then it is 8/23*6/22
Denominator is 506
Numerator is 54+30+48=132
132/506=0.261
Step-by-step explanation:
