An arithmetic series contains 20 numbers. The first number is 102. The last number is 159. Which expression represents the sum of the series?
A. (20 (159-102/2)
B. (20 (102+159/2)
C. 20 (102+159)
D. 20 (159-102)
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Home » Mathematics » An arithmetic series contains 20 numbers. The first number is 102. The last number is 159. Which expression represents the sum of the series? A. (20 (159-102/2) B. (20 (102+159/2) C. 20 (102+159) D. 20 (159-102)