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# Which of the following is closest in value to 0.5729?

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Math Expert
Joined: 02 Sep 2009
Posts: 43864
Which of the following is closest in value to 0.5729? [#permalink]

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11 Jan 2018, 23:35
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45% (medium)

Question Stats:

51% (01:20) correct 49% (01:22) wrong based on 45 sessions

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Which of the following is closest in value to 0.5729?

A. $$\frac{11.43}{2*10^2}$$

B. $$\frac{1144}{2*10^3}$$

C. $$\frac{1145}{20*10^2}$$

D. $$\frac{11.45}{2*10^2}$$

E. $$\frac{1144}{2*10^4}$$
[Reveal] Spoiler: OA

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Re: Which of the following is closest in value to 0.5729? [#permalink]

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12 Jan 2018, 00:00
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C as on solving C we get 0.5725 which is the closest of all
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Joined: 12 Dec 2016
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Re: Which of the following is closest in value to 0.5729? [#permalink]

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12 Jan 2018, 00:06
first, use the power of observation, now ones can pick 1144 and divide the number by 2, the rest is easy. => C
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Re: Which of the following is closest in value to 0.5729? [#permalink]

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12 Jan 2018, 04:41
Bunuel wrote:
Which of the following is closest in value to 0.5729?

A. $$\frac{11.43}{2*10^2}$$

B. $$\frac{1144}{2*10^3}$$

C. $$\frac{1145}{20*10^2}$$

D. $$\frac{11.45}{2*10^2}$$

E. $$\frac{1144}{2*10^4}$$

You see that each option has 2 in the denominator. So multiply .5729 with 2 to get 1.1458.
Options (C) and (D) seem to be closest.

Option (C) has 1000 in the denominator so we get decimal at the right place. Answer (C)
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Re: Which of the following is closest in value to 0.5729?   [#permalink] 12 Jan 2018, 04:41
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