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  • Typical Day of a UCLA MBA Student - Recording of Webinar with UCLA Adcom and Student

     December 14, 2018

     December 14, 2018

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    Carolyn and Brett - nicely explained what is the typical day of a UCLA student. I am posting below recording of the webinar for those who could't attend this session.
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There are a lot of houses such that the numbers of their doorplates ar

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Math Revolution GMAT Instructor
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There are a lot of houses such that the numbers of their doorplates ar  [#permalink]

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New post 22 May 2016, 16:49
00:00
A
B
C
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Difficulty:

  15% (low)

Question Stats:

84% (00:51) correct 16% (01:37) wrong based on 33 sessions

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There are a lot of houses such that the numbers of their doorplates are odd numbers and the first number of the doorplates is 545, the last number of the doorplates is 705. How many houses are there?

A. 61
B. 71
C. 81
D. 91
E. 101

* An answer will be posted in two days.

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Re: There are a lot of houses such that the numbers of their doorplates ar  [#permalink]

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New post 22 May 2016, 19:17
MathRevolution wrote:
There are a lot of houses such that the numbers of their doorplates are odd numbers and the first number of the doorplates is 545, the last number of the doorplates is 705. How many houses are there?

A. 61
B. 71
C. 81
D. 91
E. 101

* An answer will be posted in two days.



Hi,
the numbers from 546 to 705 will have equal EVEN and ODD numbers.. and 545 will make one ODD extra..
# of ODDs =\(\frac{705-545}{2} + 1 = 80+1=81\)......C
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1) Absolute modulus : http://gmatclub.com/forum/absolute-modulus-a-better-understanding-210849.html#p1622372
2)Combination of similar and dissimilar things : http://gmatclub.com/forum/topic215915.html
3) effects of arithmetic operations : https://gmatclub.com/forum/effects-of-arithmetic-operations-on-fractions-269413.html


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Re: There are a lot of houses such that the numbers of their doorplates ar  [#permalink]

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Re: There are a lot of houses such that the numbers of their doorplates ar &nbs [#permalink] 29 Jul 2018, 21:27
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