Statement 1 has 20 terms whose sum is 8000 And statement 2 is true and supporting statement 1. ∵kth bracket is (k−1)2+k(k−1)+k2=3k2−3k+1.
Statement 1: The sum of the series 1+(1+2+4)+(4+6+9)+(9+12+16)+……+(361+380+400) is 8000. Statement 2: k=1∑n(k3−(k−1)3)=n3 for any natural number n.
Held on 30 Apr 2012 · Verified 6 Jul 2026.
Statement 1 is false, statement 2 is true.
Statement 1 is true, statement 2 is true; statement 2 is a correct explanation for statement 1
Statement 1 is true, statement 2 is true; statement 2 is not a correct explanation for statement 1
Statement 1 is true, statement 2 is false
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