Question

A cartoon of 24 bulb contain 6 defective bulbs , one bulb drawn at random . What is the probability that the bulb is not defective? if the bulb is not replaced and second bulb is selected at random from rest , what is the probability that the bulb is defective?

Answer 1

Probability of getting non defective bulbs = 18/24
Probability of getting defective bulbs = 6/24

Answer 2

P(e)=number of favourable outcome\total number of outcome
a)
=18/24 by dividing we get
=9/12

b)
=6/23