Question 21693: Consider the chance of rolling two dice.
a) What is the probability that you get either two ones?
b) What is the probability that a perfect square would be shown on two dice?
c)What is the probability that a prime number is equal to the total number of points on the two dice.
d)What is the probability that a ten would not appear on the two dice?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! Consider the chance of rolling two dice.
a) What is the probability that you get either two ones?
Comment: "either two ones" or WHAT?
b) What is the probability that a perfect square would be shown on two dice?
If you are summing the faces you could get
4: (1,3) (3,1)(2,2) = 3/36
9: (3,6)(6,3)(4,5),(5,4)=4/36
P(sum is perfect square)= 7/36
c)What is the probability that a prime number is equal to the total number of points on the two dice.
2: (1,1) = 1/36
3: (1,2)(2,1)=2/36
5: (1,4)(4,1)(2,3)(3,2)=4/36
7: (1,6)(6,1)(2,5)(5,2)(3,4)(4,3)=6/36
11: (5,6)(6,5)=2/36
P(prime sum)=15/36
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d)What is the probability that a ten would not appear on the two dice?
P(no ten)= 1-P(10)
=1-5/36=31/36
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Cheers,
Stan H.
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