Question

12 defective pens are accidentally mixed with 132 good ones it is not possible to just look at a pen and tell whether or not it is defective one pen is taken out at random from this lot determine the probability that a pen taken out is a good one ​

Answer 1

Answer:

Here it goes

Step-by-step explanation:

Numbers of defective pens = 12 Numbers of good pens = 132 Total numbers of pen = 132 + 12 = 144 pens Favourable number of events = 132 Probability of getting a good pen = 132/144 = 11/12

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Answer 2

Step-by-step explanation:

As it says to find the good one i.e 132 and bad one is 12.

Total pens= 132+12

=144

then...probability= 132/144

=11/12

So 11/12 is the probability.....

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