Hello Sir, This is hitesh, i am a final year student pursuing B.E IT, kindly help me with the solution for the haskell question mentioned on the following link http://www.haskell.org/pipermail/hugs-users/2009-June.txt waiting for ur positively repy Keep up with people you care about with Yahoo! India Mail. Learn how. http://in.overview.mail.yahoo.com/connectmore