If u, v and w (all positive) are the p^ th , q^ th and r^ th terms of a GP, then the determinant of the matrix pmatrix u&p&1 v&q&1 w&r&1 pmatrix is

NDA 2018 Mathematics question

If u, v and w (all positive) are the , and terms of a GP, then the determinant of the matrix is

Answer: (A)

Let the GP have first term and ratio : , and similarly for . So the first

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Question ID VK-028954