Permutations and Combinations
The number of arrangements of the letters of the word 'BANANA' in which the two do not appear adjacently is
Correct Answer: Option(a)
Solution: Total number of permutations will be due to repetitions of and .
Now taking two of the N's together,
NN B A A A ...... by taking NN as one block
due to repetitions of s.
Hence, the required permutation will be