Permutation and CombinationEasy
Question
Consider all the permutations of the word CORRUPTION. Number of words in which U appears prior to both R is equal to -
Options
A.60
B.30
C.20
D.40
Solution
In any word R & U can occur as RUR, RRU or URR (relative to each other) all of which are equiprobable.
∴ Number of words in which relative positions
of U & R are URR =
∴ Number of words in which relative positions
of U & R are URR =
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