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DPP – Determinants

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5 Responses to “DPP – Determinants”

1. raghav shukla says:

   June 25, 2011 at 11:14 am

   0
2. sujit gupta says:

   June 25, 2011 at 2:34 pm

   easiest question………….just use da concept 1+2+3+ . . . +n=n(n+1)/2

   nd similarly for 1^2+2^+3^+…….n^…..nd for da cubes
3. Ayush Gogia says:

   June 28, 2011 at 1:30 pm

   answer is 0.
4. manas says:

   August 31, 2011 at 10:36 am

   substitue n=1 in (det a)you will get some answer in terms of ‘a’—(1) and substitute n=1 in the 4 options given[A,B,C,D]. the option which satisfies (1) is the correct answer.if two options satisfy (1) then substitute n=2 then one option will be eliminated.

   NOTE:ITS JUST A TRICK TO SOLVE THE PROBLEM BUT NOT THE PROCEDURE.
5. chandana says:

   January 14, 2012 at 2:46 pm

   n(n+1)/2