Engineering Board Exam Reviewer · Basic Probability · easy

A bag contains 5 red, 3 green, and 2 yellow marbles. One marble is drawn at random. What is the probability that it is green or yellow?

  1. 1/2
  2. 3/10
  3. 1/5
  4. 7/10

Answer

A. 1/2

Solution

There are 3+2=5 favorable marbles out of 10: 5/10= 12.

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