MCQ
The distance of point $(1, 2, 3)$ from origin is
- A$1$
- B$2$
- C$3$
- ✓$\sqrt{14}$
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$x+y-z=2, x+2 y+\alpha z=1,2 x-y+z=\beta$. If the system has infinite solutions, then $\alpha+\beta$ is equal to $.....$