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If the system of linear equations x + ...

If the system of linear equations
`x + y + z = 5`
`x + 2y + 2z = 6`
`x + 3y + lambda z = mu, (lambda, mu in R)` has infinitely many solutions, then the value of `lambda + mu` is :

A

12

B

9

C

7

D

10

Text Solution

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The correct Answer is:
A
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