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发帖数: 1320 | 1 )If MINH picks a letter of the alphabet at random, what is the probability
it occurs in the name "HETTIESBURG, MISSISSIPI"? Express your answer a
common fraction.
2) Three fair six-sided number cubes, each with faces labeled 0,2,4,6,8,10,
are rolled. What is the probability that the sum of the numbers rolled is
greater than 20? Express your answer as a common fraction.
3) In the patterns of dots with p1,p2,p3 and p4, each successive pattern of
dots has one more row and one more column. What is the ratio of the number
of dots in p50 to the number of dots in p25? Express your answer as a common
fraction. |
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