skkhoury skkhoury

19-09-2021
Mathematics

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Find the sum of number n and two previous numbers

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hnori22003 hnori22003

19-09-2021

Two previos numbers of n are ( n - 1 ) and ( n - 2 ) Thus :

( n - 2) + ( n - 1 ) + n = 3n - 3

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