Question:medium

If sumk=1ⁿ k(k+1)(k-1)=pn⁴+qn³+tn²+sn, where p,q,t and s are constants, then the value of s is equal to

Show Hint

Reduce polynomial summands first, then apply standard summation formulas.
Updated On: Mar 19, 2026
  • -(1)/(4)
  • -(1)/(2)
  • (1)/(2)
  • (1)/(4)
Show Solution

The Correct Option is B

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