Three electric lamps are fitted in a room. 3 bulbs are chosen at random from 12 bulbs having 10 good bulbs. The probability that the room is lighted is
see full answer
High-Paying Jobs That Even AI Can’t Replace — Through JEE/NEET
🎯 Hear from the experts why preparing for JEE/NEET today sets you up for future-proof, high-income careers tomorrow.
An Intiative by Sri Chaitanya
a
0
b
1
c
112C3
d
1−10C312C3
answer is B.
(Unlock A.I Detailed Solution for FREE)
Best Courses for You
JEE
NEET
Foundation JEE
Foundation NEET
CBSE
Detailed Solution
PE=1−Probability for room is not lighted =1− probability of all the three bulbs are defective =1-0=1