Three pen colours from given probabilities

Three pen colours from given probabilities

Secondary 2
5 marks
TGM Original Questions

A bag contains black, red and green pens. The probability of green is 15% and the probability of black is 0.55. One pen is selected at random.

  1. Find the probability of not green.[2]
  2. Find the probability of red.[2]
  3. If there are 18 red pens, find the total number of pens.[1]

Solution:

Solution locked

Sign in to view the step-by-step solution

Please join our E Math programme to search for similar questions for more practice.

E Math Tuition
Answer:(a) \(0.85\) (b) \(0.30\) (c) \(60\).

Need help? Join our JC Math tuition classes.

Learn more