state gov OPSC ASO Mock Test Series 2025 Quantitative Aptitude Algebra Quadratic Equation

যদি (x, y) = (4, 1) রৈখিক সমীকরণের জোড়া mx + y = 2x + ny = 5 এর সমাধান হয়, তাহলে m + n কত?

1
−2
2
−1
3
2
4
1
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