easy · GMAT Quant
In a financial model, projected quarterly cash reserves C_n satisfy C_1 = 10, C_2 = 15, and C_n = C_n-1 + C_n-2 for all integers n ≥ 3.
What is the sum of the first 5 terms C_1 + C_2 + C_3 + C_4 + C_5?
- 155
- 65
- 130
- 260
- 90
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