MCQ
The direction cosines of X -axis are
- ✓$1,0,0$
- B$0,1,0$
- C$0,0,1$
- D$1,1,1$
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given by
| $\mathrm{X}=x_i$ | 0 | 1 | 3 | 5 |
| P($\mathrm{X}=x$) | 0.2 | 0.5 | 0.2 | 0.1 |