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Permutations And Combinations
Number of letters in word 'MONDAY' = 6 (all district)
Number of vowels = 2 (O and A)
Number of letters to be used in 4 and first letter is a vowel,
Number of arrangements for box 1 = (i)
(Two vowels for 1 box)
We now have 5 letters left and 3 boxes for them.
n = 5, r = 3
∴ The number of permutations ...(ii)
Hence, from (i) and (ii), the total number of permutations i.e., the number of words formed:
= 2 x 60 = 120.
Sponsor Area
Determine K, so that K + 2, 4K – 6 and 3K – 2 are three consecutive terms of an A.P.
Sponsor Area