###### Asked in Math and Arithmetic

Math and Arithmetic

# How many digits does the SIR number always contain?

**We need you to answer this question!**

###### If you know the answer to this question, please register to join our limited beta program and start the conversation right now!

## Related Questions

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

### How many keystrokes are needed to type numbers from 1 to 1000?

There are nine numbers which contain only one digit. There are
90 numbers which contain two digits. There are 900 numbers which
contain three digits. There is one number which contains four
digits.
Therefore, the number of digits is equal to (9x1)+(90x2)+(900x3)+4
= 2893 digits. If this includes spaces, there would be 999 spaces,
therefore there would be 3892 keystrokes.

###### Asked in Numbers

### Is 7.37 a rational number?

###### Asked in Pronouns, Math and Arithmetic

### What is a relatively huge number?

One of the largest is called Graham's Number, which has so many
digits that it can only be expressed as "powers of powers of
powers".
The last ten digits of Graham's number are ...2464195387. But
the observable universe is too small to contain a written
representation of the whole number, even if the digits were of
subatomic size. It is many orders of magnitude greater than the
number of elementary particles in the known universe.