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If sum(r=1)^n r(r+1)(2r+3)=a n^4+b n^3+c...

If `sum_(r=1)^n r(r+1)(2r+3)=a n^4+b n^3+c n^2+d n+e ,` then `a-b=d-c` `e=0` `a , b-2//3,c-1` are in A.P. `(b+d)//a` is an integer

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RESONANCE DPP-JEE MAINS-All Questions
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  14. If p ,q ,r are in A.P. then value of determinant |a^2+2^(n+1)+2p b^2+2...

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  19. If x1,x2, x3 and y1, y 2, y3 are both in G.P. with the same common rat...

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  20. Find the sum of the series (2^2-1)(6^2-1)+(4^2-1)(8^2-1)+...+(100^2-1)...

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