If you are rolling a pair of dice, which of the following sums has a 1/9 probability of being rolled?
A.2
B.3
C.4
D.5
E.6
Please Help.
2007-07-31 17:39:50 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
There are 4 possible outcomes that produce the “event” of rolling a 5 and
there are 36 total possible outcomes, so the probability of rolling a 5 is 4/36 = 1/9.
2007-07-31 17:46:10 · answer #1 · answered by *Swimfan48* 3 · 0⤊ 0⤋
With two dice, there are 36 possible rolls.
A 1/9 probability occurs for a sum which can be formed in exactly 4 ways, because 4 out of 36 equals 1/9. This is case case when the roll is 5 or the roll is 9.
5: (1, 4), (2, 3), (3, 2), (4, 1)
9: (3, 6), (4, 5), (5, 4), (6, 3)
2007-08-01 00:54:57 · answer #2 · answered by jethroelfman 3 · 0⤊ 0⤋
3 and 5 as they are odd numbers, with it being a 1/9 probability
2007-08-01 00:43:05 · answer #3 · answered by Anonymous · 0⤊ 2⤋
D. 5 This is definately the right answer.
2007-08-01 00:43:50 · answer #4 · answered by Hangin Round, Downtown ... 2 · 0⤊ 0⤋
Five (1,4)(2,3)(3,2) and (4,1) in 36 possible combos.
2007-08-01 00:44:12 · answer #5 · answered by cattbarf 7 · 0⤊ 0⤋
C&D
2007-08-01 06:33:19 · answer #6 · answered by Anonymous · 0⤊ 0⤋