A box contains five bulbs out of which 2 are defective. If two bulbs are chosen at random, find the probability that all the two bulbs are defective?	Choose the correct choice from the following answers
A) 1/12  B) 1/10  C) 1/19  D) 1/13  E) 1/16
Out of five, three are good and two are defective. Required probability   = 2C2/5C2   = 1/10   Answer:1/10
<result>B</result>
A box contains five bulbs out of which 2 are defective. If two bulbs are chosen at random, find the probability that all the two bulbs are defective?