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equivalent to which of the following?

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equivalent to which of the following? [#permalink] New post 20 Sep 2017, 02:18
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72% (01:35) correct 27% (02:19) wrong based on 11 sessions


\(\frac{5^3 (4^{45} - 4^{43}) 27}{225^2}\) is equivalent to which of the following?

A. \(4^ {43}\)

B. \(4^{45}\)

C. \(4^{90} 5^3\)

D. \(4^{86} 5^3 3^3\)

E. \(4^{90} 5^3 3^3\)
[Reveal] Spoiler: OA

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Re: equivalent to which of the following? [#permalink] New post 22 Sep 2017, 05:10
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We can start by rewriting the expression as \(\frac{15^3(4^{45}-4^{43})}{15^4} = \frac{(4^{45}-4^{43})}{15} = \frac{4^{43}(4^2-1)}{15} = \frac{4^{43}*15}{15} = 4^{43}\). Answer A!
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Re: equivalent to which of the following? [#permalink] New post 12 May 2018, 01:45
IlCreatore wrote:
We can start by rewriting the expression as \(\frac{15^3(4^{45}-4^{43})}{15^4} = \frac{(4^{45}-4^{43})}{15} = \frac{4^{43}(4^2-1)}{15} = \frac{4^{43}*15}{15} = 4^{43}\). Answer A!




great way of solving the problem -- but how did you came to know that 225*225 will be 15 raised to the power of 4? how can I too solve the such problem in a 2 months time as I prepair for my THIRD GRE ATTEMPT?
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Re: equivalent to which of the following? [#permalink] New post 12 May 2018, 04:59
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Start reading this. Soon the rest.

https://greprepclub.com/forum/all-you-n ... -8898.html

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Re: equivalent to which of the following? [#permalink] New post 14 May 2018, 02:43
Carcass wrote:
Start reading this. Soon the rest.

https://greprepclub.com/forum/all-you-n ... -8898.html

Regards


Hi ,

I am moved by this article and I will be reading it more until I before I gain more clarity.

However, after reading this , my answer to the two question you asked is "NO" and hence I need help in formulating a strategy.

The only strategy which i have for my third attempt is -- complete 5 LB Complete Magoosh complete official Guide make an error log improve my RC .

I want appreciate problem recognition skill as I have seen that this is really helpful after I have solved 100+ number property question in this forum.

But I really need a solid strategy.

I am hell bent to crack GRE by 310 marks this time..
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Re: equivalent to which of the following? [#permalink] New post 15 May 2018, 15:37
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Sorry if I ask you but indeed what do you need OR are you asking ??

We are here to help you and all of the students :wink:
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Manager
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Re: equivalent to which of the following? [#permalink] New post 17 May 2018, 21:50
Carcass wrote:
Sorry if I ask you but indeed what do you need OR are you asking ??

We are here to help you and all of the students :wink:



Dear Carcass, I am only struggling to form an PLAN to retake my GRE exam.. as of now I am only focusing on this forum and then magoosh and Manhattan 5 LB.

When I look at the plan of Magoosh, I think it does not suite me. My problem is I dont have plan to attack GRE this time. I am more or less going with my gut from one topic to another.

What should I doo?

Pls help.
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Re: equivalent to which of the following? [#permalink] New post 18 May 2018, 14:42
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Start reading this post https://greprepclub.com/forum/all-you-n ... -8898.html

Let me know.

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Re: equivalent to which of the following?   [#permalink] 18 May 2018, 14:42
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