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The system of linear equations  x + 2y + 2z = 5 2  x + 3y + 5z = 8 4x +  y + 6z = 10 has :

1. infinitely many solutions when  = 2
2. no solution when  = 2
3. No solution when  = 8`
4. a unique solution when  = – 8

Correct answer: no solution when  = 2

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