NDA Government Jobs Exams

what value of k, the equations 3x – y = 8 and 9x – ky = 24 will have infinitely many solutions ?
(a) 6 (b) 5 (c) 3 (d) 1

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NDA Other Question

Two straight line paths are represented by the equations 2x – y = 2 and – 4x + 2y = 6. Then the paths will
(a) cross each other at one point (b) not cross each other
(c) cross each other at two points (d) cross each other at infinitely many points If the numbers n – 3, 4n – 2, 5n + 1 are in AP, what is the value of n ?
(a) 1 (b) 2 (c) 3 (d) 4