If two regular six-sided dice are thrown, the probability that the sum will be a prime number is
a. 5/36 b. 1/6 c. 5/12 d. 1/2 e. 2/9
thank you very much!
need help, please!
所有跟帖:
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回複:5/12
-jinjing-
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02/03/2010 postreply
11:15:40
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5/36
-pj-
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02/03/2010 postreply
13:04:32
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回複:5/36
-jinjing-
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02/04/2010 postreply
14:07:29
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回複:回複:5/36
-guest007-
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02/05/2010 postreply
10:58:48
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sorry
-guest007-
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02/05/2010 postreply
10:59:32
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回複:回複:5/36
-pj-
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02/06/2010 postreply
17:15:54
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回複:回複:回複:5/36
-Jinjing-
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02/07/2010 postreply
07:52:16
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You are right!
-pj-
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02/08/2010 postreply
14:08:47
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回複:回複:回複:5/36
-wxczcbm-
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02/07/2010 postreply
22:20:10
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回複:回複:回複:回複:5/36
-greenfarm-
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02/08/2010 postreply
10:13:27
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you are right. possibility for odd number is wrong
-pj-
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02/08/2010 postreply
14:09:53
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thank you very much!
-greenfarm-
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02/04/2010 postreply
09:11:23
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回複:need help, please!
-carrollton-
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02/10/2010 postreply
17:42:33
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回複:回複:need help, please!
-Jinjing-
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02/12/2010 postreply
12:48:16
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為什麽我算得是17/36?
-rsg11-
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03/02/2010 postreply
16:30:40