Select the following statements that are true.

Question $2$ options:

A latch is a sequential circuit that cannot be built with logical gates.

A full adder has three input bits and two output bits.

A decoder is a combinatorial circuit.

A binary counter can be implemented with a number of flip$-$flops and inverters.

A NAND gate can be built with two field effect transistors.

A flip$-$flop is a combinatorial circuit.