Question

In a box containing 100 bulbs, 10 are defective. What is the probability that out of a sample of 5 bulbs, none is defective?

Answer 1

Here is your answer mate...✍✍

total number of balls present in box=100

Total number of defective balls=10

Remaining balls= 100-10=90(non defective)

Favourable outcome= 5

Possible outcome=90

probability= 5/90

=1/18