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S(x) denotes the sum of the first x multiples of 11, where x is a...
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Updated on: 25 Jun 2025, 06:59
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S(x) denotes the sum of the first x multiples of 11, where x is a positive integer.
For example, S(20) = 11 + 22 + 33 + ... + 220 = 2,310. What is the value of S(40)?
A. 4,620 B. 5,115 C. 9,020 D. 11,385 E. 14,025
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