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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

Neelam
11 Oct
6 Answers

6 Answers

- SA
  
  Shruti
- 11 Oct
18
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- RK
  
  Rajat
- 18 Apr
18
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- YK
  
  Yaseen
- 09 Mar
15
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  Vibhor
- 12 Nov
18
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- PL
  
  Pooja
- 14 Oct
18
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- Shreya
- 29 Jun
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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