MCQ
A random variable $X$ assumes the values $-4, 3$ and $10$ with respective probability $\frac{2}{5}, K$ and $\frac{1}{15}$ , where $0 < K < 1$ and $X$ does not assume any value other than these values. What will be the value of $E(X)?$
- ✓$\frac{2}{3}$
- B$\frac{2}{15}$
- C$\frac{2}{5}$
- D$\frac{3}{15}$