MathDB

1

Part of 1999 AMC 12/AHSME

Problems(1)

Basic Sequence

Source:

1/19/2006
1 \minus{} 2 \plus{} 3 \minus{} 4 \plus{} \cdots \minus{} 98 \plus{} 99 \equal{} (A)\minus{}\! 50 \qquad (B)\minus{}\! 49 \qquad (C)\ 0 \qquad (D)\ 49 \qquad (E)\ 50