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# any 2 digit number can be expressed as 10x+y

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Senior Manager
Joined: 30 May 2005
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any 2 digit number can be expressed as 10x+y [#permalink]  15 Jun 2005, 01:11
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any 2 digit number can be expressed as 10x+y
PlZ how do you expressed a 3 digit number

thanks
Director
Joined: 18 Apr 2005
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Re: PS Question [#permalink]  15 Jun 2005, 01:18
mandy wrote:
:) hello
any 2 digit number can be expressed as 10x+y
PlZ how do you expressed a 3 digit number

thanks

n digit number (Xn, Xn-1, .., X1 are digits) is Xn*10^(n-1) + Xn-1 *10^(n-2) + ... + X1*10^0

n digit decimal fraction = Xn*10^-(n) + Xn-1 *10^-(n-1) + ... + X1*10^-1
Re: PS Question   [#permalink] 15 Jun 2005, 01:18
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