Re: ISI Sample Paper PEA 2016 Discussion

Posted by Dr. Strange on Apr 13, 2016; 9:25am
URL: http://discussion-forum.276.s1.nabble.com/ISI-Sample-Paper-PEA-2016-Discussion-tp7599761p7599810.html

13.System is homogenous.So either trivial soln(0,0,0,)exists or infinite soln exists.
So for non-zero soln to exist determinant should be 0.
Making determinant zero we get the soln.

21.four cases are possible: (red,not red),(red,red),(not red,red),(not red,not red)
P(red,red)=a/n* (a-1)/(n-1)
P(not red,red)=(n-a)/n * a/(n-1)
p(second ball is red)=P(red,red)+P(not red,red)= a/n

26.given constraint x=y
put x=y in target equation and optimise