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decimal notation

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Senior Manager
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Joined: 30 May 2005
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decimal notation [#permalink] New post 17 Jun 2005, 16:23
.
:) hello
:? 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) 1,001
how to approach this one
i would go for c
c and e seem to be the only possible choice
thanks
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Joined: 21 Jun 2004
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 [#permalink] New post 17 Jun 2005, 23:13
hundred 0s and one 1 = 101 = C
  [#permalink] 17 Jun 2005, 23:13
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