Question
The matrix$ \displaystyle \begin{bmatrix}-12\\10 \\13 \\4 \end{bmatrix}$ is a:
- square matrix
- row matrix
- column matrix
- null matrix
Solution:
Matrix $ \displaystyle \begin{bmatrix}-12\\10 \\13 \\4 \end{bmatrix}$ is a column matrix.Hence, the answer is column matrix.
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| $X$ | 2 | 3 | 4 | 5 |
| $P(X)$ | $\frac{5}{k}$ | $\frac{7}{k}$ | $\frac{9}{k}$ | $\frac{11}{k}$ |