Re: ISI-2009 MATH QUESTIONS

Posted by Granpa Simpson on Apr 09, 2014; 6:22pm
URL: http://discussion-forum.276.s1.nabble.com/ISI-2009-MATH-QUESTIONS-tp7586464p7586470.html

Answer to Q2 will be option d i.e. Y=X-1,
The solution can be obtained by expressing Y as a sum of finite G.P series with first term 2^0 (i.e. 1) and common ratio r= 2, and n= 65, this will give Y= 2^(65)-1= X-1