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A bag contains 10 black balls and 15 white balls…

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MATHS

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

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Probability of picking white ball = 15/25 = 3/5

Now for the right answer to the above question:

  1. Option A is incorrect.
  2. Option B is correct.
  3. C is incorrect.
  4. D is not the correct answer.

QUICK TIPS…

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 /

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