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If a denotes the number of permutations of (x+2) things taken all at a time, b the number of permutations of x-11 things taken all at a time such that a = 182 bc, find the value of x. |
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Answer» If a denotes the number of permutations of (x+2) things taken all at a time, b the number of permutations of x-11 things taken all at a time such that a = 182 bc, find the value of x. |
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