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GMAT Prep practice test 2 - PS q 36

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by GMATGuruNY » Mon Jun 15, 2015 2:32 am
When you post a problem, please include the answer choices.
If (1/5)^m * (1/4)^18 = 1/[2(10)³�], then m = ?

A. 17

B. 18

C. 34

D. 35

E. 36
On the right side, we have 1/10³� = 1/2³� * 1/5³�.
Thus, the left side must also include 1/5³�, implying that m=35.

The correct answer is D.
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by Brent@GMATPrepNow » Mon Jun 15, 2015 7:03 am
If [(1/5)^m][(1/4)^18] = = 1/[2(10)^35], then m =
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