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Answer in Statistics and Probability for Shema Derrick #205140

Author:
October 24th, 2022

A bag contains 2 red, 3 green and 2 blue balls. Two balls are drawn at random. What is the probability that none of the balls drawn is blue? 

The total number of balls is

“2+3+2=7”

The number of balls which are not blue is “2+3=5.”

The probability that the first ball is not blue and the second ball is bot blue is

“P(B’B’)=dfrac{5}{7}(dfrac{5-1}{7-1})=dfrac{10}{21}”

The probability that none of the balls drawn is blue is “dfrac{10}{21}” .

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