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If x = a , y = b, z = c is the solution ...

If x = a , y = b, z = c is the solution of the system of simultaneous linear equations x + y + z = 4, x- y + z =2, x + 2y + 2z =1, then ab + bc + ca =

A

0

B

`-25`

C

1

D

`-4`

Text Solution

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The correct Answer is:
B
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