SOLUTION: (1 pt) Consider a list of randomly generated 3-letter "words" printed on a paper. The letters cannot be repeated. (a) At least how many of these "words" should be printed to be

Question 364934: (1 pt) Consider a list of randomly generated 3-letter "words" printed on a paper. The letters cannot be repeated.
(a) At least how many of these "words" should be printed to be sure of having at least 8 identical "words" on the list?
Answer =
(b) At least how many identical "words" are printed if there are 140401 "words" on the list?
Answer =
Answer by sudhanshu_kmr(1152) (Show Source): You can put this solution on YOUR website!
no. of possible 3-letter worlds = 26*25*24 =15600

(a) no. of minimum words to sure having 8 identical words = 15600*7 +1 =109201

(b) divide 140401 by 15600
we get 140401 = 15600 * 9 + 1
so, at least 10 identical words.

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