Question

10 defective pens are accidentally mixed with 90 good ones it is not possible to just look at a pen and tell whether good or bad one pen is taken out from this lot. Determine the probability that the pen taken out is good one option a 0.10 option B 0.20 option C 0.90 option D 1.o

Answer 1

C. 0.90 is correct..........

Answer 2

The correct answer is the option c) 0.90 i.e, the probability of getting a good pen from the mix is equal to 0.90 .

The total number pens in the mix = 100

The number of good pens in the mix = 90

The probability of getting a good pen = total number of good pens / total number of pens in the mix

= 90/100

= 0.90