Math and Arithmetic

# How many times does the digit 9 appear in the numbers from 1 to 100?

###### Wiki User

###### 2010-03-04 02:51:44

11 times

## Related Questions

###### Asked in Math and Arithmetic, Statistics, Algebra

### How do you divide three digit numbers by two digit numbers?

You see how many times the two digit number goes into the first
two numbers then you will take them away and then you will get the
third number and put it on the end of your answer then you will see
how many times your two digit number goes into your new number and
then you will get your answer. And by the way I am eleven and I am
still in primary school so you should really know it. I can divide
a two digit by a seventeen digit number and that ins easy
peasy.

###### Asked in Math and Arithmetic

### How many 5 digit combos in 30 numbers?

The answer will depend on how many digits there are in each of
the 30 numbers. If the 30 numbers are all 6-digit numbers then the
answer is NONE!
If the 30 numbers are the first 30 counting numbers then there
are
126 combinations of five 1-digit numbers,
1764 combinations of three 1-digit numbers and one 2-digit
number, and
1710 combinations of one 1-digit number and two 2-digit
numbers.
That makes a total of 3600 5-digit combinations.