engg.manik Senior | Next Rank: 100 Posts View User Profile Posts: 65 Joined: Thu Jul 02, 2009 10:38 pm Location: Bangalore Thanked: 1 times Q-43 by engg.manik » Sat Oct 10, 2009 5:44 am 43. There are 4 letters and 4 corresponding envelopes. If we put the 4 letters into the envelopes at random, what is the probability that only one letter was into the correct envelope? OA is 1/3 Top Quote