SOLUTION: Evaluate S5 for 400 + 200 + 100 + … and select the correct answer below. 25 775 1,125 500

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Question 996991: Evaluate S5 for 400 + 200 + 100 + … and select the correct answer below.
25
775
1,125
500
Answer by ikleyn(52788) About Me  (Show Source):
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S%5B5%5D = 400 + 200 + 100 + 50 + 25 = 775.