Question

A bag contains 5 blue, 6 red and 9 green balls. What is the probability of getting a blue ball if you randomly picked up one.

Answer 1

The probability of picking up 2 red balls is (6/11)(5/10) = 3/11. The probability of picking up 2 blue balls is (5/11)(4/10) = 2/11.

Therefore the probability of picking up 2 balls of different colors is 1 - 3/11 - 2/11 = 6/11

Answer 2

$\huge{\sf{\underline{\underline{\pink{Solution}}}}}$

Given:

• Red ball = 6
• Blue ball = 5
• Green ball = 9

To find:

Probability of getting blue ball.

Formula used:

$\boxed{\sf{\red{Probability = \frac{favourable \: cases}{total \: no. \: of \: cases}}}}$

Answer:

Total no. of balls = 20 (5+6+9)

Probability of getting blue ball = $\frac{5}{20}$

Hence, the probability of getting blue ball is 1/4.

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