A jar contains 27 marbles. Five of them are green and other are blue. If a marble is drawn at random from the jar, the probability that is green is 2/3. Find the number of blue marbles in the jar.
Nareshmar:
given is p(e)=2/3 so according to it there should be 18 blue marble and 9 green
In the question it is given that there are 5 green marbles
but the probability is also given sir
yes
5marbles is given because he say 5 green marbles toh he hi jyada bhi ho skti h or baki blue h
yup so there is 18 blue and 9 green
Answers
Answered by
20
total 27 marbles
probability green marbles = 2/3 ×27 (cancel)
=2×9
=18
probabilty of blue marble = 1-2/3
= 1/3
blue marble = 1/3 ×27 (cancel )
= 1×9
= 9
green = 18 and blue = 9
probability green marbles = 2/3 ×27 (cancel)
=2×9
=18
probabilty of blue marble = 1-2/3
= 1/3
blue marble = 1/3 ×27 (cancel )
= 1×9
= 9
green = 18 and blue = 9
correct answer
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Answered by
7
Answer:
The number of blue marbles in the jar is 9.
Step-by-step explanation:
Let x be the number of green marbles in the jar,
Given,
The total number of marbles = 27,
In which some are green and some are blue,
⇒ Number of blue marbles = 27 - x
Since, the probability of green marble = Number of green marbles / Total number of marbles
Hence, the number of blue marbles = 27 - 18 = 9.
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