[" If "sum(s=1)^(n){sum(r=1)^(s)r}=an^(3...

[" If "sum_(s=1)^(n){sum_(r=1)^(s)r}=an^(3)+bn^(2)+cn," then "],[[" (A) "a=(1)/(6),b=(1)/(2),c=(1)/(3)]]

Promotional Banner

Promotional Banner

Similar Questions

Explore conceptually related problems

sum_(s=1)^(10)sum_(r=0)^(s-1)(2^(s)-2^(r))

If f(n)=sum_(s=1)^(n)sum_(r=s)^(n)C_(r)^(r)C_(s), then f(3)=

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

sum_(r=1)^(n) r^(2)-sum_(r=1)^(n) sum_(r=1)^(n) is equal to

sum_(r=1)^(n) r^(2)-sum_(r=1)^(n) sum_(r=1)^(n) is equal to

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

sum_(r=1)^(n)r^(2)-sum_(m=1)^(n)sum_(r=1)^(m)r is equal to

Recommended Questions

[" If "sum(s=1)^(n){sum(r=1)^(s)r}=an^(3)+bn^(2)+cn," then "],[[" (A) ...
Text Solution
|
Prove that sum(r=0)^ssum(s=1)^n^n Cs^n Cr=3^n-1.
Text Solution
|
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 ...
Text Solution
|
sum(r=1)^(n)r^(3)=f(n) then sum(r=1)^(n)(2r-1)^(3) is equal to
Text Solution
|
If sum(r=1)^(n)I(r)=2^(n)-1 then sum(r=1)^(n)(1)/(I(r)) is
Text Solution
|
If sum(r=1)^(n)r^(3)((C(n,r))/(C(n,r-1)))=14^(2) then n=
Text Solution
|
If sum(s=1)^n{sum(r=1)^s r}=a n^3+b n^2+C n then
Text Solution
|
sum(r=1)^(n)r^(2)-sum(m=1)^(n)sum(r=1)^(m)r is equal to
Text Solution
|
sum(s=1)^(10)sum(r=0)^(s-1)(2^(s)-2^(r))
Text Solution
|