Sunday, July 24, 2011
Solution to What is the probability that two cards randomly selected
Answer: 12/17
Solution: After choosing a first card, the second needs to be in one of the other
three suits and of a different value. Hence, the answer is 3·12/(52−1) = 12/17 .
Solution: After choosing a first card, the second needs to be in one of the other
three suits and of a different value. Hence, the answer is 3·12/(52−1) = 12/17 .
Solution to How many positive integers
Answer: 84
Solution: Note that x must be between 250 and 333, inclusive. There are 84 integers
in that interval.
Solution: Note that x must be between 250 and 333, inclusive. There are 84 integers
in that interval.
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