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Ludmilka [50]
3 years ago
12

The Greek alphabet contains 24 letters. How many fraternity names with Greek letters can be formed if each fraternity name conta

ins 3 letters and repetition of letters is not permitted?
a)69
B)12144
c)13824
Mathematics
2 answers:
LenaWriter [7]3 years ago
8 0
Slot method

1st slot=24 options
2nd slot=23 options (1 went to 1st slot)
3rd slot=22 options (another to previous slot)

multiply them
24*23*22=12144 ways

B
ankoles [38]3 years ago
4 0
For the first letter we have 24 choices. Since letters can't repeat the second letter has 23 choices (24 minus 1 that was used for the first slot) and the third has 22 (24 minus one for the first slot and one for the second slot).

The total number of combinations is thus: 24 x 23 x 22= 12,144
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