Question

Pades
two hearts.
4165 20825
7. Three light bulbs are selected at random from 20 bulbs of which 5 are defective. What is the
probability that (i) none of the bulbs is defective and (ii) exactly one is defective.​

Answer 1

Answer:

7. Three light bulbs are selected at random from 20 bulbs of which 5 are defective. What is the

probability that (i) none of the bulbs is defective and (ii) exactly one is defective.

fi