Re: ISI 2013 ME - I Answer Key

Posted by wolverine on May 01, 2013; 7:35pm
URL: http://discussion-forum.276.s1.nabble.com/ISI-2013-ME-I-Answer-Key-tp7579715p7580307.html

q-8)
total no of tosses =43
no of heads greater than no of tails will be when heads are 22,23,24,25....43 as corresponding to these cases no of tails will be 21,20,...1.

so total no of heads will ne 43C22+43C23+43C24+.......43C43= 2^(43-1)=2^42