A) 120
B) 720
C) 400
D) None of these
Correct Answer: B
Solution :
[b] In LUCKNOW, number of letters = 7 (all distinct), vowels (U, O) =2, consonants (L, C, K, N, W)=5 There are 7 letters so 7 places are required. Number of even places are 3 and vowels are 2, so 2 vowels can be placed in \[^{3}{{C}_{2}}.2!=6\] and 5 consonants can be placed in remaining places in 5! Ways. Hence, number of words \[=6.5!=720.\]You need to login to perform this action.
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