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Eamcet Mathematics
Algebra Permutations And Combinations
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Q.
If a denotes the number of permutations of x + 2 things taken all at a time, b the number of permutations of x things taken 11 at a time and c the number of permutations of x - 11 things taken all at a time such that a = 182 bc, then the value of x is
A.
15
B.
10
C.
18
D.
12
E.
None of the above
View Answer
Correct choice: D
Explanation:
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