02-08-2018
Mathematics

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Kim rolled a number cube four times.
What is the probability that she rolled a number less than 3 on all of her rolls?

Kim rolled a number cube four times What is the probability that she rolled a number less than 3 on all of her rolls class=

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choixongdong choixongdong

02-08-2018

a number less than 3 on a number cube (1, 2) = 2/6 = 1/3

4 times = 1/3 x 1/3 x 1/3 x 1/3 = 1/81

Answer : B

1/81

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konrad509 konrad509

02-08-2018

[tex] |\Omega|=6^4=1296\\
|A|=2^4=16\\\\
P(A)=\dfrac{16}{1296}=\dfrac{1}{81} [/tex]

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