a box contains 28 bulbs of which 7 bulbs are defective, a bulb is drawn randomly from box. find the probability of picking a non defective bulb
Answers
Answered by
3
Answer:
14/28 =1/2
Step-by-step explanation:
Answered by
6
Answer: total number of bulbs=28
Number of detective bulbs=7
Number of non-defective bulb=28-7=21
If a bulb is drawn at random,then the probability of picking a detective bulb:-
(Number of non-defective detective bulbs)/(Total number of bulbs in the box)
=21/28
=3/4
Therefore the probability of picking a non-defective bulb =3/4
Similar questions