Question

A box contains 75 red and 25 green light bulbs. it is found that 20 bulbs in the box are defective, of which 2 are red. what is the probability that a bulb selected randomly from the box is either a red bulb or a defective bulb?

0.82
0.93
0.73
0.95

Answer 1

15 bulbs are red.

Step-by-step explanation: Because 75 is 3 times as big as 25 so every 1 green light bulb 3 red light bulbs will be deflective.