Grade 12th passAlgebra
If N is the sum of all digits used in writing all the numbers from 1 Tu thousand then the last digit of N is
1 Answer
Saurabh Koranglekar
sum=
(1+1000)1000/2
0 last digit
it uses formula (a +An)*(n/2)
(1+1000)1000/2
0 last digit
it uses formula (a +An)*(n/2)
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