An urn contains 5 red and 2 green balls
Asked by admin @ in Math viewed by 318 People
An urn contains 5 red balls and 2 green balls. two balls are drawn one after the other.what is the probability that the second ball is red
Asked by admin @ in Math viewed by 318 People
An urn contains 5 red balls and 2 green balls. two balls are drawn one after the other.what is the probability that the second ball is red
Answered by admin @
Answer:
The probability that the second ball is red is
Step-by-step explanation:
Given : An urn contains 5 red balls and 2 green balls. Two balls are drawn one after the other.
To find : What is the probability that the second ball is red ?
Solution :
Number of red balls = 5
number of green balls = 2
Total number of balls = 7
There are two possibilities :
1) If the first ball was red and second ball is also red.
The probability is
2) If the first ball was green and second ball is red.
The probability is
The probability that the second ball is red is given as
Therefore, The probability that the second ball is red is
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