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**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****D1/5**

**QUICK ANSWER…**

**B**

**SOLUTION****… **** **

**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.**

**QUICK TIPS…**

**You may please note the****se/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 /**