With a few exceptions metals are placed in groups 1-13 of the Periodic Table of Mendeleev.
odd numbers
the dimensionless numbers have the definition as that of dimensionless groups, and have all the properties which dimensionless groups have.
There are 6 groups.
You can lay the blocks out of decimal numbers by putting the numbers in groups.
2 groups
NOTHING!
Both are part of the real numbers.
by rounding off the numbers
3112331
No.
they are averages!
Factors.