| $x$ | $1$ | $2$ | $3$ | $4$ | $5$ | $6$ |
| $P(X=x)$ | $a$ | $a$ | $a$ | $b$ | $b$ | $0.3$ |
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| $X$ | $\alpha$ | $1$ | $0$ | $-3$ |
| $P(X)$ | $\frac{1}{3}$ | $K$ | $\frac{1}{6}$ | $\frac{1}{4}$ |
| $x$ | $0$ | $1$ | $2$ | $3$ | $4$ | $5$ |
|---|---|---|---|---|---|---|
| $P(x)$ | $k$ | $0.3$ | $0.15$ | $0.15$ | $0.1$ | $2k$ |
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