Question

a bag contains 10 red balls and 15 white balls out of which 3 red and 4 white balls are damaged. if two balls are selected at random what is the probability that either both are white balls or both are not damaged.

Answer 1

This is ur answer. Hope u got it

Answer 2

The required probability is 0.42.

Step-by-step explanation:

Since we have given that

Number of red balls = 10

Number of white balls = 15

Number of damaged red ball = 3

Number of damaged white ball = 4

So, Probability that either both are white or both are not damaged is given by

$\dfrac{^{15}C_2+^{7}{C_2}}{^{25}C_2}\\\\=\dfrac{126}{300}\\\\=0.42$

Hence, the required probability is 0.42.

# learn more:

A bucket contains 10 balloons and 20 balls out of which 3 balloons and 5 balls are damaged. if we choose two items at a random, find the probability that either both are balls or both are not damaged

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