AIEEE
Exam
Numerical Ability
The number of arrangements of the letters of the word BANANA in which the two
N’s do not appear adjacently is
( a ) 40 ( b ) 60 ( c ) 80 ( d ) 100
Read Solution (Total 2)
-
- Total arrangements -2 N's appear together = 6!/(3!*2!) - 5!*2!/(3!*2!)= 60-20= 40
- 8 years agoHelpfull: Yes(0) No(0)
- Let the two N's appear together.
so, no. of arrangements = 5!/3! = 20
total no of arrangements = 6!/3!/2! = 60
So, no. of arrangements in which N do not appear together = 60 - 20 = 40 - 7 years agoHelpfull: Yes(0) No(0)
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