UPSC NDA I 2023 Mathematics Solved Paper

Question : 9 of 120

Marks: +1, -0

Let AX=B be a system of 3 linear equations with 3-unknowns. Let X1 and X2 be its two distinct solutions. If the combination aX1+bX2 is a solution of AX=B; where a,b are real numbers, then which one of the following is correct?