Re: Please explain how did we get this one

Posted by kangkan on Apr 01, 2014; 9:29am
URL: http://discussion-forum.276.s1.nabble.com/Please-explain-how-did-we-get-this-one-tp7585776p7585890.html

oh...see do the matrix operation R1= R2-R1 and R2=R3- R2 ..also remember b-a=c-b..rows 1 and 2 will be equal..hence det=0
Now a+c/2=b..therefore 2b-c-a=0..hence option c