A box contains Six bulbs out of which five are defective. If five bulbs are chosen at random, find the probability that all the four bulbs are defective?  Select the correct option
A) 1/127
B) 1/129
C) 1/12
D) 1/8
E) 1/6
Out of six, one are good and five are defective. Required probability   = 5C5/6C5   = 1/6   Answer: 1/6
<result>E</result>
A box contains Six bulbs out of which five are defective. If five bulbs are chosen at random, find the probability that all the four bulbs are defective?