Which of the following are correct in respect of the system of equations x + y + z = 8, x − y + 2z = 6 and 3x − y + 5z = k ?
1.They have no solution, if k = 15.
2.They have infinitely many solutions, if k = 20.
3.They have unique solution, if k = 25.
Select the correct answer using the code given below :
Mathematics
2016
NDA Mathematics 2016
NDA 2016
Options
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