Question

A box contain 550 bulb 22 are defective : 1. Find the probability of getting defective bulbs 2. Find the probability of getting good bulbs

Answer 1

Hey..
Hereis the answer to your question...
Total number of bulbs =550
22 bulbs are defective
1. p(getting defective bulbs)=number of favourable outcomes/total number of outcomes.
P(getting defective bulbs)=22/550=1/25
2.good bulbs=total number of bulbs-defective bulbs=550-22=528
So,P(getting good bulbs)=528/550=264/275...
Hope this helps u...