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12 defective pens are accidentally mixed with 132 good ones. It is not possible to just look at a pen

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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 the pen taken out is a good one. Select the correct answer from above options

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Number of defective pens =12 Number of good pens =132 Total Number of pens = 12 + 132 = 144 The probability that the pen taken out is good one,

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