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Write the Statements S1, S2, and S3 and Determine If Sn:12+23+34++n(n+1)=n(n+1)(n+2)3S _ { n } : 1 \cdot 2 + 2 \cdot 3 + 3 \cdot 4 + \ldots + n ( n + 1 ) = \frac { n ( n + 1 ) ( n + 2 ) } { 3 }

Question 239

Essay

Write the statements S1, S2, and S3 and determine if each statement is true.
- Sn:12+23+34++n(n+1)=n(n+1)(n+2)3S _ { n } : 1 \cdot 2 + 2 \cdot 3 + 3 \cdot 4 + \ldots + n ( n + 1 ) = \frac { n ( n + 1 ) ( n + 2 ) } { 3 }

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