Number of ways in which 4 boys and 2 girls (all are of different heights) can be arranged…
Mathematics · JEE Main · NTA Exams — Permutations and Combinations
Number of ways in which 4 boys and 2 girls (all are of different heights) can be arranged in a line so that boys as well as girls among themselves are in decreasing order of height (from left to right), is :
- 1
- 6!
- 15
- None of these
Answer
(C) 15
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