For a two input logic gate, the truth table has 4 possible input combinations. For a 3 input logic gate the number of combinations (entries) in the input side of the truth table are

Options

A. 4
B. 6
C. 8
D. 10

Answer

C

Explanation

The number of input combinations for an N-input truth table is `2^N` . E.g. for 2 inputs they are `2^2` = 4 for 3 inputs , N = 3 and there are `2^3` = 8 input combinations