The binning hash function makes use of:

The high order digits or bits in the key
  • The low order digits or bits in the key
  • The middle digits or bits of the key
  • All of the digits or bits in the key

Consider what happens with 10 bins and 3-digit numbers in the range 0 to 999.

0 to 99 goes to the first bin, 100 to 199 to the second, and so on.