How many times have you counted from 1 to 150,5

How many times have you counted from 1 to 150,5

Don't forget the number of 50-59 downstairs. It's 25 times. I can't write the formula. I'm programming it with a computer!

How many times is the number 2 shared among the natural numbers from 1 to 100
How much is it? Say the right answer

The number of individuals is 10
Ten out of ten
20 times in total

How many eights are raised from 1 to 100?

8,18,28,38,48,58,68,78,80,81,82,83,84,85,86,87,88,89,98. There are 20 8's and 88's in total

From 1 to 100, one by one, which two numbers are in the middle

50 and 51