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Tardigrade
Question
Mathematics
Number of ways in which 13 distinct letters of the English alphabets can be written in alphabetical order without writing any two consecutive letters, is
Q. Number of ways in which 13 distinct letters of the English alphabets can be written in alphabetical order without writing any two consecutive letters, is
928
102
Permutations and Combinations
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A
14
B
15
C
16
D
19
Solution:
Correct answer is (a) 14