CTET 2 Math and Science Feb 2016 Paper

Question : 37 of 120

Marks: +1, -0

A bag has 5 red marbles, 4 green marbles and 3 blue marbles. All marbles are identical in all respects other than colour. A marble is taken out from the bag without looking into it. What is the probability that it is a non-green marble?

$5/ 12$
$7/ 12$
$1/ 3$
$2 /3$

Validate

Solution:

Total number of marbles in the bag

=5+4=3=12

Total number of green marbles in the bag = 4
Probability of green marble

=4/12=1/3

Probability of non green marble

=1-\;\;{1}/{3}=\;\;{2}/{3}

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