NDA 2025 Mathematics question

MathematicsDeterminantsNDA 2025

In obtaining the solution of the system of equations , and by Cramer's rule, the value of is obtained by dividing by , where What is the value of the determinant ?

Answer: (B)

Solution

In Cramer's rule, is obtained from by replacing the second column (the coefficients of ) with the constants 7, 16, 22: $ =

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Question ID VK-030145