State whether the following statement is TRUE / FALSE.

A minimal $$DFA$$ that is equivalent to an $$NFDA$$ with $$n$$ modes has always 2ⁿ states

State whether the following statement is TRUE / FALSE.

Regularity is preserved under the operation of string reversal.

State whether the following statement is TRUE / FALSE.

A is recursive if both a and its complement are accepted by Turing Machine M accepts.

State whether the following statement is TRUE / FALSE.

The intersection of two $$CFL's$$ is also $$CFL.$$