NDA2023MathematicsPermutation and CombinationActual
Let x be the number of permutations of the word 'PERMUTATIONS' and y be the number of permutations of the word 'COMBINATIONS'. Which one of the following is correct?
Options
- Ax=y
- By=2 x
- Cx=4 y
- Dy=4 x
Correct answer
C. x=4 y
Step-by-step solution
PERMUTATIONS x= 12! 2! [ T Comes 2 times ] x=4 y .