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28 Jan 2018, 23:32
Kudos
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B
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Difficulty:
5%
(low)
Question Stats:
87% (00:53) correct
13%
(01:27)
wrong
based on 113
sessions
History
Date
Time
Result
Not Attempted Yet
What is the probability that rolling two identical dice together will result in the sum of the dice adding to 7?
A. 1/36
B. 1/6
C. 1/3
D. 5/6
E. 35/36
A. 1/36
B. 1/6
C. 1/3
D. 5/6
E. 35/36
28 Jan 2018, 23:44
Kudos
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B.
sample set = 36.
1,1 1,2 1,3 1,4 1,5 1,6
2,1 2,2 2,3 2,4 2,5 2,6
3,1 3,2 3,3 3,4 3,5 3,6
4,1 4,2 4,3 4,4 4,5 4,6
5,1 5,2 5,3 5,4 5,5 5,6
6,1 6,2 6,3 6,4 6,5 6,6
no of sum of 7 from first row=1
no of sum of 7 from second row=1
no of sum of 7 from third row=1
no of sum of 7 from fourth row=1
no of sum of 7 from fifth row=1
no of sum of 7 from sixth row=1
Total=6
Probability = 6/36 = 1/6
sample set = 36.
1,1 1,2 1,3 1,4 1,5 1,6
2,1 2,2 2,3 2,4 2,5 2,6
3,1 3,2 3,3 3,4 3,5 3,6
4,1 4,2 4,3 4,4 4,5 4,6
5,1 5,2 5,3 5,4 5,5 5,6
6,1 6,2 6,3 6,4 6,5 6,6
no of sum of 7 from first row=1
no of sum of 7 from second row=1
no of sum of 7 from third row=1
no of sum of 7 from fourth row=1
no of sum of 7 from fifth row=1
no of sum of 7 from sixth row=1
Total=6
Probability = 6/36 = 1/6
