- Have any questions?
- [email protected]
- Home
- A bag contains 7 green and 8 white balls.
Question 1:
A bag contains 7 green and 8 white balls. If two balls are drawn simultaneously, the probability that both are of the same colour is? A. 8/15
B. 2/5
C. 3/5
D. 7/15
Feedback Drawing two balls of same color from seven green balls can be done in ⁷C₂ ways.
Similarly from eight white balls two can be drawn in ⁸C₂ ways.
P = ⁷C₂/¹⁵C₂ + ⁸C₂/¹⁵C₂ = 7/15
Similarly from eight white balls two can be drawn in ⁸C₂ ways.
P = ⁷C₂/¹⁵C₂ + ⁸C₂/¹⁵C₂ = 7/15
These questions are from this test. Would you like to take a practice test?