SAT Math Practice Question #21946 - SATify | SATify

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SAT Math Practice Question #21946 - SATify | SATify

#21946

algebra

sequences and series

medium

90 sec

What is the value of $5 \cdot (1 - 2 + 3 - 4 + \dots + 99 - 100 + 101)$ ?

A.

51

B.

102

C.

250

D.

255

E.

510