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Sagot :
The probability that the marbles selected are of the same colour is; 5/18
Probability of outcome
The probability that the marbles are the same colour includes:
- The probability of 2 reds, 2 whites, 2 greens.
The total number of marbles = 9 marbles.
Since, the selection is without replacement;
The probability of selecting same colour marbles is;
- {4/9×3/8} + {2/9×1/8} + {3/9×2/8}
The probability of selecting same colour marbles is therefore;
- 12/72 + 2/72 + 6/72
- = 5/18
Read more on probability;
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