SOLUTION: 2. A fair die is rolled twice. Find the probability of the following.
a. rolling a sum of 10 on the two rolls
b. rolling a sum not equal to 5 on the two rolls
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Question 339329: 2. A fair die is rolled twice. Find the probability of the following.
a. rolling a sum of 10 on the two rolls
b. rolling a sum not equal to 5 on the two rolls
c. rolling a 2 first, then a 6
d. rolling 2 even numbers
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A fair die is rolled twice. Find the probability of the following.
a. rolling a sum of 10 on the two rolls
10: 4/6 ; 5/5 ; 6/4
P(sum = 10) = 3/36
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b. rolling a sum not equal to 5 on the two rolls
5: 1/4 ; 2/3 ; 3/2 ; 4/1
P(sum not 5) = 32/36
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c. rolling a 2 first, then a 6
P(2 then 6) = (1/6)(1/6) = 1/36
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d. rolling 2 even numbers
2/2; 2/4; 2/6
4/2; 4/4; 4/6
6/2; 6/4; 6/6
P(2 even) = 9/36
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Cheers,
Stan H.
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