A Circuit Is to Be Built That Takes the Numbers $$G ( w , x , y , z )$$

Short Answer

A circuit is to be built that takes the numbers 0 through 9 as inputs (1 = 0001, 2 = 0010, . . . , 9 = 1001). Let $$G ( w , x , y , z )$$ be the Boolean function that produces an output of 1 if and only if the input is an odd number.
Find a Karnaugh map for G and use the map and don't care conditions to find a simple expression for
G.