A Bag contains 7 black & 6 white balls , one ball is dream randomly, find the probability of getting either a black or a white ball.
1. 2
2. 1
3. 3
4. 4
5. 5
1. 2
2. 1
3. 3
4. 4
5. 5
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Correct Answer – Option 2 : 1
Given
Number of black balls = 7
Number of white balls = 6
Formula used
P(E) = Number of favourable outcomes/Total number of outcomes
Calculation
Probability of getting black ball = 7/13
Probability of getting white ball = 6/13
Required probability = (7/13) + (6/13)
⇒ 1