GRE Practice Test 2 Quant Explanations

= 2 to raised the sixth power, times, 10 raised to the negative 6 power, times, 10 raised to the negative 11 power, = 2 raised to the sixth power, times, 10 raised to the negative 17 power, = 64, times, 10 raised to the negative 17 power. So the decimal has two nonzero digits, 6 and 4. The correct answer is Choice B, two. ................
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