Latest MBA Aptitude Question SOLUTION: Find the number of ways in which we can arrange 2n letters X 1, X 2,.......X n and Y 1, Y 2,.........Y nin a line so that the suffixes of the letters ‘x’ and those of the lett

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(#M40016741) MBA question permutations and combinations, probability Keep an EYE

Find the number of ways in which we can arrange 2n letters X 1, X 2,.......X n and Y 1, Y 2,.........Y nin a line so that the suffixes of the letters ‘x’ and those of the letters ‘y’ are respectively in ascending order of magnitude.

1) 1
2) n
3) ⁿ
C
₁
+
ⁿ
C
₂
+
ⁿ
C
₃
+.....+
ⁿ
C
_n
4) 2
ⁿ
[135.......(2n-1)/n!

Asked In MBA (12 years ago)

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