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Problems(1)

Arithmetic Sequence

Source:

3/2/2010
The first three terms of an arithmetic progression are x \minus{} 1, x \plus{} 1, 2x \plus{} 3, in the order shown. The value of x x is: (A)\ \minus{} 2 \qquad (B)\ 0 \qquad (C)\ 2 \qquad (D)\ 4 \qquad (E)\ \text{undetermined}
arithmetic sequence