an urn contains 9 red,7 white and 4 black balls .a ball is drawn at random.the probability the ball drawn is not red
Answers
Answer: Probability: 11/20.
Explanation: If you add all the numbers together, which in this case is 20, you will get the total number of balls. The number 20 will be your denominator. The question is asking," What is the probability the ball drawn is not red?" You will add all the other numbers of the colored balls except red. So, 7+4=11. This is the number of balls that can be chosen other than the red balls. The number 11 is your numerator. So, the probability of the ball chosen isn't red is 11/20. Simplify if needed. Thank you for your time.
Answer:
11/20
Explanation:
Number of balls= 9+7+4=20
Probability of drawing of a red ball= 9/20
Probability of not drawing a red ball= 1- 9/20= 11/20
Answer: the probability the ball drawn is not red = 11/20