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\(P\) is growing a snake which doubles every three hours. If there will be \(5.12 \times 10^6\) in \(12\) hours, how many were there \(6\) hours ago?
1. \(6.4 \times 10^5\)
2. \(3.2 \times 10^5\)
3. \(1.6 \times 10^5\)
4. \(8.0 \times 10^4\)
5. \(4.0 \times 10^4\)
Answer: D
Source: EMPOWERgmat
1. \(6.4 \times 10^5\)
2. \(3.2 \times 10^5\)
3. \(1.6 \times 10^5\)
4. \(8.0 \times 10^4\)
5. \(4.0 \times 10^4\)
Answer: D
Source: EMPOWERgmat
