Jharkhand PSC Prelim Exam 2008 Solved Paper

Question : 82 of 100

Marks: +1, -0

There are three tables with two drawers. One is a silver coin in both the drawers of a table. There is a gold coin in both the drawers of the second table and there is a gold coin in the drawers of the third table and silver coin in the other drawers. If 3 silver coins are removed then what is the probability that there is a gold coin in the drawer?

1
0.5
0.25
0.75

Validate

Solution:

(2) Total number of drawer

=2+2+2=6

Drawers having silver coin

=2+1+0=3

∴ Probability of one Golden coin
in drawer

=\;{3}/{6}=\;{1}/{2}=0.5

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