exchange questions urgency

Posted by ritu on Jun 20, 2012; 6:06am
URL: http://discussion-forum.276.s1.nabble.com/exchange-questions-urgency-tp7578292.html

hi amit sir
can u pls discuss on this post the exchange questions involving lexicographic preferences like the one which came in 2010??????
or if anyone else knows how to solve such questions then pls share ur approach....


also i have problem in folllowing questions of dse 2010
55,56,57,60

thanx a lot