Question

1. What number am I?

I have four digits.
My tens and tenths are the same value.
My hundredths is the difference of 5 and 1.
My tens is double my hundredths.
My ones is the other factor of 4 besides 1 and itself.

Answer 1

The tens and tenths are the same, so they must be 2, since 2 * 2 = 4.
The hundredths is the difference of 5 and 1, so it must be 4.
The tens is double the hundredths, so it must be 2 * 4 = 8.
The only other factor of 4 besides 1 and itself is 2, so the ones place must be 2.

Putting it all together, the number is 2824.