Quant Daffodil question.

Q. A box contains 27 marbles some are blue and others are green. If a marble is drawn at random from the box, the probability that it is blue is 1/3. Then how many number of green marbles in the box? A. 10 B. 15 C. 14 D. 18

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Your Answer

Answer – D. 18
Explanation:
Blue marble – x
xc1/27c1 = 1/3
x/27=1/3
x=27/3=9
No of green marbles = Total – Blue marble
=27-9
=18

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