JEE Math Practice Question
If the system of equations $$\begin{aligned} & 2 x-y+z=4 \\ & 5 x+\lambda y+3 z=12 \\ & 100 x-47 y+\mu z=212 \end{aligned}$$ has infinitely many solutions, then $\mu-2 \lambda$ is equal to
- A.56
- B.59
- C.57
- D.55
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