For each natural number n, the sum 1(2) + 2(3) + .…· + n(n + 1) is equal to: n(2n+1)(2n+2) n(n+1)(2n-1) 3 3 O This option O This option n(n+1)(n+2) None of the choices 3

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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number theory
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For each natural number n, the sum 1(2) + 2(3) +
... + n(n + 1) is equal to:
n(2n+1)(2n+2)
n(n+1)(2n-1)
3
3
This option
This option
n(n+1)(n+2)
None of the choices
3
This option
This option
Transcribed Image Text:Question For each natural number n, the sum 1(2) + 2(3) + ... + n(n + 1) is equal to: n(2n+1)(2n+2) n(n+1)(2n-1) 3 3 This option This option n(n+1)(n+2) None of the choices 3 This option This option
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