Concept drill
derangement
GATE CSE & IT · Combinatorics · 2004-2020
2
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50%
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2
years appeared
Study anchor
Rosen — Discrete Mathematics and Its Applications
Discrete structures, counting, relations, graph theory
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The number of permutations of the characters in LILAC so that no character appears in its original position, if the two L’s are indistinguishable, is _______.
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2004 PYQ
In how many ways can we distribute 5 distinct balls, $${B_1},{B_2},......,{B_5}$$ in 5 distinct cells, $${C_1},{C_2},.....,{C_5}$$ such that Ball $${B_i}$$ is not in cell $${C_i}$$...
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