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Subjects
Mathematics State Board
Class 10
Statistics and Probability
Probability
24.
Five mark exercise problem VII
Exercise condition:
5
m.
In a box there are
20
non-defective
and some
defective bulbs
. If the probability that a bulb selected at random from the box found to be defective is
\frac{3}{8}
then, find the number of
defective bulbs
.
Answer
:
The number of
defective bulbs
=
.
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