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How many odd integers are between 101 and 502, ends being

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Manager
Joined: 05 Jul 2006
Posts: 197
How many odd integers are between 101 and 502, ends being [#permalink]

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08 Sep 2006, 19:10
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How many odd integers are between 101 and 502, ends being inclusive?
CEO
Joined: 20 Nov 2005
Posts: 2894
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008

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08 Sep 2006, 22:09
lan583 wrote:
How many odd integers are between 101 and 502, ends being inclusive?

101 to 200 - 50 odds
201 to 300 - 50 odds
301 to 400 - 50 odds
401 to 500 - 50 odds
and 501.

Total = 201
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SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

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Joined: 05 Jul 2006
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09 Sep 2006, 14:59
Total number including 101 and 502 = 502 -101+1 = 402

and since the set {101........502) starts in odd and ends in even thus the nymber off odds = number of even = 402/2 = 201
Director
Joined: 28 Dec 2005
Posts: 752

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09 Sep 2006, 17:50
total numbers = 502-101+1 = 402

even numbers....
102.....502

=2[51 - 251]

gives us 251-51+1 evens
=201 evens

odds = total - evens = 402-201=201
09 Sep 2006, 17:50
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