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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: 198
Followers: 1

Kudos [?]: 24 [0], given: 0

How many odd integers are between 101 and 502, ends being [#permalink]  08 Sep 2006, 18:10
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How many odd integers are between 101 and 502, ends being inclusive?
CEO
Joined: 20 Nov 2005
Posts: 2910
Schools: Completed at SAID BUSINESS SCHOOL, OXFORD - Class of 2008
Followers: 19

Kudos [?]: 133 [0], given: 0

Re: PS- odd integers [#permalink]  08 Sep 2006, 21:09
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
_________________

SAID BUSINESS SCHOOL, OXFORD - MBA CLASS OF 2008

SVP
Joined: 05 Jul 2006
Posts: 1516
Followers: 5

Kudos [?]: 127 [0], given: 39

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: 755
Followers: 1

Kudos [?]: 8 [0], given: 0

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
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