It is certain that the truth table of n propositions has the n-th power term of 2. The corresponding formula does not necessarily take the value of 0 or 1.

That is to say, the formula result value corresponding to each item is different, and the truth table is also different. There is a ***2 N power term, and each term has the possibility of 2, so there is a 2 2n power truth table.

For example, a 1 proposition has four truth tables.

0 0 0 0 0 1 0 1

1 0 1 1 1 0 1 1