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what is the 100th digit after the "." of this number

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SVP
Joined: 24 Sep 2005
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what is the 100th digit after the "." of this number [#permalink]

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25 Feb 2006, 22:14
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what is the 100th digit after the "." of this number 0.123456789101112 ?

a. 1
b.2
c. 3
d. 4
e.5
SVP
Joined: 05 Apr 2005
Posts: 1731
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Re: PS find the rule [#permalink]

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25 Feb 2006, 22:28
laxieqv wrote:
what is the 100th digit after the "." of this number 0.123456789101112 ?
a. 1
b.2
c. 3
d. 4
e.5

0.12345678910 => 11 digits.
11 to 50= 40x2=80 digits.
so 0.12334..........50 => 91 digits.
so 0.12334..........545 => 100th digits.

so it is 5.
Current Student
Joined: 29 Jan 2005
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25 Feb 2006, 22:44
Great explanation Himalaya.

SVP
Joined: 24 Sep 2005
Posts: 1890
Followers: 19

Kudos [?]: 292 [0], given: 0

Re: PS find the rule [#permalink]

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27 Feb 2006, 20:34
HIMALAYA wrote:
laxieqv wrote:
what is the 100th digit after the "." of this number 0.123456789101112 ?
a. 1
b.2
c. 3
d. 4
e.5

0.12345678910 => 11 digits.
11 to 50= 40x2=80 digits.
so 0.12334..........50 => 91 digits.
so 0.12334..........545 => 100th digits.

so it is 5.

"more than sufficient" OA is E
Re: PS find the rule   [#permalink] 27 Feb 2006, 20:34
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