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Mathematics

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If a fair die is rolled 3 times, what is the probability, to the nearest thousandth, of getting exactly 2 ones?

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[tex]\displaystyle|\Omega|=6^3=216\\A=\binom{3}{2}\cdot5=3\cdot5=15\\|A|=\dfrac{15}{216}=\dfrac{5}{72}\approx0.069[/tex]

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