How Many Cards are in a Deck with Jokers? [Standard Deck of Cards]
A bag contains 10 black balls and 15 white balls. If a ball is picked at random without replacement, what is the probability of picking a white ball?
- A. 2/5
- B. 3/5
- C. 4/5
Total number of white balls = 15
Total number of balls = 15 + 10 = 25
Probability = number of required outcome / number of possible outcome
Probability of picking white ball = 15/25 = 3/5
Now for the right answer to the above question:
- Option A is incorrect.
- Option B is correct.
- C is incorrect.
- D is not the correct answer.
You may please note these/this:
- Probability of any event occurring is simply the number of the event divided by total possible events.
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/ culled from 2015 JAMB-UTME mathematics past question 42 /