Suppose we uniformly and randomly select a permutation from the 20!…
GATE · 2007 · CS
Suppose we uniformly and randomly select a permutation from the 20! Permutations of 1, 2, 3 ,…..,20. What is the probability that 2 appears at an earlier position than any other even number in the selected permutation?
- A.
1/2
- B.
1/10
- C.
9!/20!
- D.
None of the above.
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