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Value of 'alpha' for which system of equ...

Value of `'alpha'` for which system of equations `x+y+z=1,x+2y+4z=alpha` and `x+4y+10 z=alpha^2` is consistent, are 1 (b) 3 (c) 2 (d) 0

A

1,-2

B

`-1,2`

C

1,2

D

none of these

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The correct Answer is:
C
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