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# What is the least number of digits (including repetitions)

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Director
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What is the least number of digits (including repetitions) [#permalink]

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16 Nov 2005, 18:54
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What is the least number of digits (including repetitions) needed to express 10^100 in decimal notation?

A) 4
B) 100
C) 101
D) 1,000
E) 1001
Current Student
Joined: 28 Dec 2004
Posts: 3361
Location: New York City
Schools: Wharton'11 HBS'12
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16 Nov 2005, 19:01
hmm...not sure if get the question...but shouldnt 100 digits be the right answer?

B
Current Student
Joined: 28 Dec 2004
Posts: 3361
Location: New York City
Schools: Wharton'11 HBS'12
Followers: 16

Kudos [?]: 297 [0], given: 2

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16 Nov 2005, 19:20
hmmm, lets see I get 100 zeros plus 1...which is 101..digits..

joemama142000 wrote:
Director
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19 Nov 2005, 07:16
What do you mean when you say - 'in decimal notation'??
_________________

Cheers, Rahul.

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19 Nov 2005, 07:44
1.0^101 or ten "googolplexes"

http://en.wikipedia.org/wiki/Googolplex
19 Nov 2005, 07:44
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