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19. Word Permutation How many different 4-letter per- mutations can be written from the word hexagon? 21, ID Cards How many different ID cards can
19. Word Permutation How many different 4-letter per- mutations can be written from the word hexagon? 21, ID Cards How many different ID cards can be made if there are 6 digits on a card and no digit can be used more than once? 23. Ticket Selection How many different ways can 4 tickets be selected from 50 tickets if each ticket wins a different prize
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Number Theory
Authors: George E Andrews
1st Edition
0486135101, 9780486135106
