Matrices and Determinants Part 1

Section: Mathematics
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Question : 40 of 100
 
Marks: +1, -0
If the system of equations
x+y+z = 5
x+2y+3z = 9
x+3y+αz = b
has infinitely many solutions, then b–a equals:
[10 Jan 2019 Shift 1]
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