Q. 12 A4.9( 8 Votes )

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Answer :

Given,

Lot consists of total 144 ball pens.


Defective pens = 20


Non – defective pens = 144 – 20


Non – defective pens = 124


Sudha will buy pens if pen is good.


Probability that Sudha will buy pens –


P(Sudha will buy pen) =


P(Sudha will buy pen) =


P(Sudha will buy pen) =


Probability of Sudha will buy a pen will .


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