JEE Main 201912 Jan, Morning shiftMathematicsMediumMatrices and Determinants245× since 2002
An ordered pair (, ) for which the system of linear equations
(1 + ) x + y + z = 2
x + (1 + )y + z = 3
x + y + 2z = 2
has a unique solution, is :
JEE Main 2019 · 12 Jan, Morning shift · Q4563