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GATE | GATE-CS-2015 (Set 3) | Question 14

  • Difficulty Level : Medium
  • Last Updated : 28 Jun, 2021

The equality above remains correct if X is replace by
(A) Only I
(B) Only II
(C) I or III or IV but not II
(D) II or III or IV but not I

Answer: (C)

Explanation: X = Sum of the cubes of {1, 2, 3, .. n|
X = n2 (n+1)2 / 4

Quiz of this Question

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