12. If a box contains 3 red balls, 5 green balls and 4 white balls. If a student select any
one of the ball from the box at random what is the probability that the ball is taken
out will be (a) red (b) not green
Answers
Answered by
1
Answer:
red 1/9
not green 1/7
Step-by-step explanation:
this is the answer
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Answered by
2
Answer:
a)
Red ball
given 3 red balls are in the box
total number of balls=3+5+4=12
therefore the probability
using the formula of
probability (the event)=number of outcome/total number of outcome
p(Red ball)=3/12=1/4
b)
Not green
given 5 green balls are there
total number of balls =12
therefore if not green,then 12-5=7
therefore the probability
using the formula of
probability (the event)=number of outcome/total number of outcome
p(not green ball)=7/12
hope it helps
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