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(0.3)^5/(0.3)^3

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Math Expert
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V
Joined: 02 Sep 2009
Posts: 50572
(0.3)^5/(0.3)^3  [#permalink]

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New post 16 Sep 2018, 01:15
00:00
A
B
C
D
E

Difficulty:

  5% (low)

Question Stats:

90% (00:19) correct 10% (00:38) wrong based on 59 sessions

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Director
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Joined: 31 Oct 2013
Posts: 775
Concentration: Accounting, Finance
GPA: 3.68
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Re: (0.3)^5/(0.3)^3  [#permalink]

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New post 16 Sep 2018, 01:58
1
Bunuel wrote:
\(\frac{(0.3)^5}{(0.3)^3} =\)


A. 0.001

B. 0.01

C. 0.09

D. 0.9

E. 1



\(\frac{(0.3)^5}{(0.3)^3} =\)

= \((0.3)^{5-3}\)

= \(0.3^2\)

=0.09

The best answer is C.
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Re: (0.3)^5/(0.3)^3  [#permalink]

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New post 16 Sep 2018, 02:02
\(\frac{{0.3}^5}{{0.3}^3}\)

= \(0.3^{5-3}\)

= \(0.3^2\)

=0.09

C is the answer.
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Manager
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(0.3)^5/(0.3)^3  [#permalink]

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New post 16 Sep 2018, 02:19
If someone needs a visualization why we subtract powers and not divide 0.3 by 0.3

\(\frac{0.3^5}{0.3^3}\)=\(\frac{(0.3)(0.3)(0.3)(0.3)(0.3)}{(0.3)(0.3)(0.3)}\)=(0.3)(0.3)=0.09

IMO
Ans: C
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Re: (0.3)^5/(0.3)^3  [#permalink]

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New post 16 Sep 2018, 13:39
Hi Bunuel,

is this a 600-700 range question?

Most of the times for me 700 questions are difficult to crack or take long time.
But 600 to 700 are very easy... wondering is this real
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Re: (0.3)^5/(0.3)^3 &nbs [#permalink] 16 Sep 2018, 13:39
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