Question

the probability of getting a non- defective pen from a lot of 1000 pens is 24 by 25 . find the number of defective pens in the lot also find the probability of drawing the defective pen from the lot

Answer 1

non defective =24/25
then 24/25=x/1000
x=1000*24/25
x=960
therefore non defective pens are 960
defective pens =1000-960=40
therefore the probability of getting defective pens =40/1000=1/25

Answer 2

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