A bag contain 3 Red, x yellow and 3x-1 Blue ball. One ball is taken out of the bag at
random. If probability of selecting yellow ball is 1/5 then find the probability of
Blue ball.
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2
given...
red balls= 3
yellow balls= x
blue balls=3x-1
thus, total no. of balls= 3+x+3x-1 = 4x+2
probability (yellow ball)= x/4x+2× 1/5
= 5x= 4x+2
x= 2
thus, yellow balls= 2
blue balls= 6-1= 5
red balls= 3
total balls= 10
probability (blue ball)= 5/10= 1/2
Answered by
1
Answer:
probability of blue ball is 1/2
Step-by-step explanation:
see the pictures to know the method
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