### A good answer might be:

8 patterns can be formed from three bits.

# How Many Patterns from Three Bits?

Repeat the trick. Copy the table for two bits:

      0 0
      0 1
      1 0
      1 1

      0 0
      0 1
      1 0
      1 1

Now make each row unique by putting a "0" in front of the first group and a "1" in front of the second group:

    0 0 0
    0 0 1
    0 1 0
    0 1 1

    1 0 0
    1 0 1
    1 1 0
    1 1 1

Now you have all the patterns that can be formed from three bits.

### QUESTION 5:

How many patterns can be formed from N bits?