In a jar there are balls in different colors: blue, red, green and yellow.
In a jar there are balls in different colors: blue, red, green and yellow.
The probability of drawing a blue ball is 1/4.
The probability of drawing a red ball is 1/5.
The probability of drawing a green ball is 1/10.
If a jar cannot contain more than 50 balls, how many yellow balls are in the Jar?
Answer/Solution
9
Steps/Work
answer of 1st
just add the given probabilities p(blue)+p(red)+p(green) i.e
1/4+1/5+1/10=11/20
now we know p(blue)+p(red)+p(green)+p(yellow)=1
11/20+p(yellow)=1
p(yellow)=9/20
i.e why yellow balls are 9.
A
just add the given probabilities p(blue)+p(red)+p(green) i.e
1/4+1/5+1/10=11/20
now we know p(blue)+p(red)+p(green)+p(yellow)=1
11/20+p(yellow)=1
p(yellow)=9/20
i.e why yellow balls are 9.
A