there are 45 green and red mables in a bag. If the probability of getting a green mable is 2/5 how many green mables are in the bag?
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ans. is 27 it is very simple try it with your brain fight with it
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2/5 is the probabilty
in the sense probabiliy is actually the percentage of win and loose.
ie
if expressed in percentage it would be
2×20/5×20
40/100
there are 40% chances of getting a green marble.
means about 40% marbles are green
then number of green marbles
=45×40/100
=1800/100
=18
there are total 18 green marbles in the bag
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