Find the probability of rolling a number

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Reference no: EM133199072

1: In a different plan for area? codes, the first digit could be any number from 2 through 6?, the second digit was either 0, 1, 2, or 3?, and the third digit could be any number except 2 or 5. With this? plan, how many different area codes are? possible?

2: A medical researcher needs 8 people to test the effectiveness of an experimental drug. If 11 people have volunteered for the? test, in how many ways can 8 people be?selected?

3: A? 12-sided die is rolled. The set of equally likely outcomes is? {1,2,3,4,5,6,7,8,9,10,11,12}. Find the probability of rolling a number less than 3.

Reference no: EM133199072

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