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decimals

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Manager
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decimals [#permalink]

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New post 02 Jun 2009, 12:40
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A decimal is 0.123456789101112131415161718192021...What is the 100th digit to the right of the point place of the decimal?

Kudos [?]: 62 [0], given: 0

Senior Manager
Senior Manager
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Joined: 16 Jan 2009
Posts: 354

Kudos [?]: 232 [0], given: 16

Concentration: Technology, Marketing
GMAT 1: 700 Q50 V34
GPA: 3
WE: Sales (Telecommunications)
Re: decimals [#permalink]

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New post 02 Jun 2009, 13:26
Can not be determined.
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Lahoosaher

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Joined: 07 Nov 2007
Posts: 1792

Kudos [?]: 1061 [2], given: 5

Location: New York
Re: decimals [#permalink]

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New post 02 Jun 2009, 14:11
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vcbabu wrote:
A decimal is 0.123456789101112131415161718192021...What is the 100th digit to the right of the point place of the decimal?


0.12345678910 11 12 13 14 15 16 17 18 19 20 21 ..

if you observe clearly.. they are sequential numbers.

first 9 numbers are single digit numbers
rest of numbers are double digit numbers and so on..


9 single numbers + 45 double digit numbers (90 digits) + first digit of (46th number) --> 100th digit

45 double digit numbers.. --> 10 to 54
46th double digit number --> 55

so 100th digit = 5
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Kudos [?]: 1061 [2], given: 5

Senior Manager
Senior Manager
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Joined: 15 Jan 2008
Posts: 280

Kudos [?]: 49 [0], given: 3

Re: decimals [#permalink]

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New post 03 Jun 2009, 03:01
kudos..suresh..+1..

thugh i liked the expression of molsk11.. [:)]

Kudos [?]: 49 [0], given: 3

Senior Manager
Senior Manager
User avatar
Joined: 16 Jan 2009
Posts: 354

Kudos [?]: 232 [0], given: 16

Concentration: Technology, Marketing
GMAT 1: 700 Q50 V34
GPA: 3
WE: Sales (Telecommunications)
Re: decimals [#permalink]

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New post 04 Jun 2009, 13:51
kudos..suresh..+1
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Lahoosaher

Kudos [?]: 232 [0], given: 16

Re: decimals   [#permalink] 04 Jun 2009, 13:51
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