Question

A box of colored balls contains 10 red balls, 7 green balls
and 12 blue balls. A ball is drawn at random. What is the
probability that a ball taken out is red or green?
​

Answer 1

Answer:

Probability of taking a red ball or a green ball = 17/29

Step-by-step explanation:

Given:

Number of red balls = 10

Number of green balls = 7

Number of blue balls = 12

∴Total no of balls = 10 + 7 + 12 = 29 balls in all in the box

Probability of an event is No Of Favorable Outcomes / Total No of Possible Outcomes

The favorable outcomes for taking a red ball and green ball together is 10 + 7 = 17 Favorable outcomes

29 is the total number of outcomes as per our calculations.

So,

∴ Probability of taking a red ball or a green ball = 17/29

Answer 2

Answer:

probability =favourable outcomes /total outcomes

=10+7/10+7+19

=17/29