Mathematics > 2019 > 34
WASSCE
A box contains 2 white and 3 blue identical balls. If two balls are picked at random from the box, one after the other with replacement, what is the probability that they are of different colours?
A.
| 2 3 |
B.
| 3 5 |
C.
| 7 20 |
D.
| 12 15 |
Answer: D
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