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When two six-sided dice are rolled, there are 36 possible outcomes.

Find the probability that the sum is not 4.


Find the probability that the sum is greater than 5.

1 Answer

2 votes

Answer:

11/12

13/18

Explanation:

the only sums that add up to 4 are

1+3 and 2+2

1 and 3 combination-order can be inverted

3,1

2 and 2 are the same numbers and cant be inverted

each combination is worth 1/36 or 1/6×1/6 for each roll of the dye

3/36 chance that a sum adds up to four

36/36 combinations in total minus the 3

33/36 is the probability that you wont have a sym of 4

simplified 11/12

the prob that the sum is greater than 5

numbers that sum to less than or equal to 5 include 1+1=2, 2+1=3, 1+2=3, 1+3=4, 3+1=4, 1+4=5, 4+1=5, 2+2=4, 2+3=5, 3+2=5.

10 combinations minus it from total

26/36

13/18

User Prashant Shirke
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