## Answer & Solution

**Option D**

1.

The fan put of a 7400 NAND gate is

2.

The universal gate is ___________

3.

An OR gate has 6 inputs. The number of input words in its truth table are

4.

In which of the following base systems is 123 not a valid number?

5.

In case of OR gate, no matter what the number of inputs, a

6.

The number of Boolean functions that can be generated by n variables is equal to

7.

Which mechanism allocates the binary value to the states in order to reduce the cost of the combinational circuits?

8.

Positive logic in a logic circuit is one in which

9.

Digital circuit can be made by the repeated use of ___________

10.

Pick out the CORRECT statement: