1. In a one bag 5 white balls and remaining are blue. If probability of blue ball will be twice of probability of white ball, then find probability of selected blue balls from bag About the author Emma
Answer: Let number of blue balls =x Total number of balls =5+x Probability for a white ball = x+5 5 Probability for a blue ball = 5+x x According to the question 5+x x =2( x+5 5 )⇒x=10 ∴ Number of blue balls =10. Reply
Answer:
Let number of blue balls =x
Total number of balls =5+x
Probability for a white ball =
x+5
5
Probability for a blue ball =
5+x
x
According to the question
5+x
x
=2(
x+5
5
)⇒x=10
∴ Number of blue balls =10.