If `sum_(r=1)^(n)r(r+1)(2r+3)=an^(4)+bn^(3)+cn^(2)+dn+e`, then.

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

If Sigma_(r=1)^(n) r(r+1)(2r +3)=an^4+bn^3+cn^2+dn +e then

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

If sum_(r=1)^nr(r+1)(2r+3)=an^4+bn^3+cn^2+dn+e, then

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

If sum_(k=1)^(n) (sum_(m=1)^(k) m^(2))=an^(4)+bn^(3)+cn^(2)+dn+e , then

If sum_(k=1)^(n) (sum_(m=1)^(k) m^(2))=an^(4)+bn^(3)+cn^(2)+dn+e , then

If sum_(s=1)^(n){sum_(r=1)^(s)r}=an^(3)+bn^(2)+Cn then

If S_(n)=sum_(r=1)^(n)(2r+1)/(r^(4)+2r^(3)+r^(2)), then S_(10) is equal to