Re: ISI 2013 ME - I Answer Key

Posted by srawan on May 05, 2013; 11:23am
URL: http://discussion-forum.276.s1.nabble.com/ISI-2013-ME-I-Answer-Key-tp7579715p7580391.html

actually i forgot  which method i used

alternative is
24-36+24-1=11
using priciple of inclusion and exclusion
more detail
4!-3*(4!/2)+3*(4!/3)-1