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GMAT Paper Tests
If \(n\) is a positive integer, the sum of the integers from 1 to \(n\), inclusive, equals \(\frac{n(n+1)}{2}\). Which of the following equals the sum of the integers from 1 to 2\(n\), inclusive?
A. \(n(n+1)\)
B. \(\frac{n(2n+1)}{2}\)
C. \(n(2n+1)\)
D. \(2n(n+1)\)
E. \(2n(2n+1)\)
OA C
If \(n\) is a positive integer, the sum of the integers from 1 to \(n\), inclusive, equals \(\frac{n(n+1)}{2}\). Which of the following equals the sum of the integers from 1 to 2\(n\), inclusive?
A. \(n(n+1)\)
B. \(\frac{n(2n+1)}{2}\)
C. \(n(2n+1)\)
D. \(2n(n+1)\)
E. \(2n(2n+1)\)
OA C
