hard · GMAT Quant
A software engineering team tracks the daily number of unresolved bugs B_n over a five-day sprint. For any day n ≥ 1, the daily count satisfies B_n+1 = 2 B_n - 7.
If the number of unresolved bugs on Day 5 is B_5 = 71, and all daily bug counts must be positive integers, what was the number of unresolved bugs on Day 1?
- 9
- 11
- 15
- 19
- 23
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