Q:what is the number of arrangements of the word banana such that both the n's doesn't come in an adjacent manner

Dear Pranay

total perms = 6!/(3!)(2!)
perms where 2 N's are together (take them as one unit) = 5!/(3!)
perms where two N's are not together = 6!/(3!)(2!) - 5!/(3!) = 40.

All the best.

AKASH GOYAL

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