Question

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

Answer 1

Answer:

I hope it's help you answer : 11/13.

Step-by-step explanation:

Total pens=132+12=144. and total good pens =132. hence, probability of pen taken out to be a good one is 132/144=66/72=33/36=11/13.

Answer 2

Hope it is helpful for you.........