Topic: Engineering Mathematics
If a bag contains 6 blue balls, 5 white balls and 4 yellow balls and if a ball is drawn out at random, probability of not getting a white ball is
- A. $\frac{2}{3}$
- B. $\frac{1}{3}$
- C. $\frac{1}{5}$
- D. None of the above
Answer: A. $\frac{2}{3}$
Explanation: The total number of balls is $6 + 5 + 4 = 15$. The number of non-white balls (blue or yellow) is $6 + 4 = 10$. The probability of not drawing a white ball is $\frac{10}{15} = \frac{2}{3}$.