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# 2^30-2^29/2

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Moderator
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2^30-2^29/2 [#permalink]  16 May 2018, 09:09
Expert's post
00:00

Question Stats:

89% (00:19) correct 10% (00:28) wrong based on 19 sessions
 Quantity A Quantity B $$\frac{2^{30} - 2^{29}}{2}$$ $$2^{28}$$

A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Manager
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Re: 2^30-2^29/2 [#permalink]  16 May 2018, 09:22
1
KUDOS
In A, taking 2^29 common and solving would give same value as B

Hence they are both equal
Director
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Re: 2^30-2^29/2 [#permalink]  16 May 2018, 23:43
1
KUDOS
simplify qty A:
Take $$2^{29}$$ common

$$\frac{2^{29}(2-1)}{2}$$ this reduces to

$$\frac{2^{29}}{2^1}$$

when $$2^1$$ goes into the numerator the expression further simplifies to:
$$2^{29} * 2^{-1} = 2^{28}$$

option C
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This is my response to the question and may be incorrect. Feel free to rectify any mistakes

Last edited by Carcass on 17 May 2018, 04:09, edited 1 time in total.
Edited by Carcass
Moderator
Joined: 18 Apr 2015
Posts: 5190
Followers: 77

Kudos [?]: 1041 [0], given: 4683

Re: 2^30-2^29/2 [#permalink]  17 May 2018, 04:09
Expert's post
Thank you. Formatted in a better manner.

Regards
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Re: 2^30-2^29/2   [#permalink] 17 May 2018, 04:09
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