Question

15 defective bulbs are accidentally mixed with 150 good ones .One bulb is taken out

randomly from this lot. Determine the probability that the bulb taken out is

(i) good one (ii) defective one​

Answer 1

Answer:

Number of defective bulbs = 15

Total of bulbs = 150

Number of good bulbs = 150 - 15

Good bulbs = 135

( i ) probability of taking a good bulb = 135/150

=> 9/10

( ii ) probability of taking a defective bulb = 15/150

=> 1/10

hope it helps you

Answer 2

First

Probability

= Number of favourable outcomes / Total number of outcomes

= 150/165

= 10/11

Hence, probability of getting a good bulb is 10/11.

Second

Probability

= Number of favourable outcomes / Total number of outcomes

= 15/165

= 1/11

Hence, probability of getting a defective bulb is 1/11.