hard · GMAT Quant
A network packet throughput controller evaluates a baseline parameter r, which is a positive integer, using a four-stage formula:
Stage 1: Calculate S_1 = r + 1.
Stage 2: If S_1 is even, set S_2 = dfracS_12; if S_1 is odd, set S_2 = 3S_1 + 3.
Stage 3: Calculate S_3 = S_2 - 9.
Stage 4: Calculate S_4 = 2S_3 + 6.
If S_4 = 84 and r is an even integer, what is the value of r?
- 14
- 15
- 39
- 48
- 95
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