Math, asked by Mansitiwari8444, 1 year ago

In a book, page starts with digit 1. Total sum of page digits = 3269. What is the number of pages?

Answers

Answered by pragyadas

0

sn = 3269
sn = n/2 + {a+( n-1)d}
a = 1
d =1
put all the value in formula and solve

pragyadas: an =n/2 {2a+(n-1) d} is the correct formula srry for typing mistake

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