Question

Olga wrote all the natural numbers from 1 to k. Including 1 and k. How many numbers did she write?

Answer 1

Given that "Olga wrote all the natural numbers from 1 to k. Including 1 and k"

So Olga write k numbers.

lets take an example

if k = 10 , then natural numbers between 1 and 10 are 10 numbers that are 1 , 2 , 3 ,4 ,5 ,6 , 7 , 8 ,9 and 10.

Hence she write k numbers.