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Set \(S\) contains consecutive natural numbers from \(1\) to \(100,\) in increasing order. \(S_1\) and \(S_2\) denote the sum of first \(n\) even numbers and last \(n\) odd numbers of set \(S,\) respectively. What is the value of \(n,\) if \(S_1:S_2 = 16: 85?\)
A. 5
B. 10
C. 15
D. 20
E. 25
Answer: C
Source: e-GMAT
A. 5
B. 10
C. 15
D. 20
E. 25
Answer: C
Source: e-GMAT
