A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that atleast one bulb is good
Choose the correct choice from the following choices.
A) 125/126
B) 125/129
C) 125/128
D) 125/124
E) 125/121
Required probability = 1 - 1/126 = 125/126.125/126nswer:125/126
<result>A</result>
A box contains nine bulbs out of which 4 are defective. If four bulbs are chosen at random, find the probability that atleast one bulb is good