6. There are cells in a 4-variable K-map. a) 12 b) 18 c) 16 d) 8 7. The expression Y=AB+BC+AC shows the operation. a) SOP b) EXOR c) POS d) NOR 8. The canonical sum of product form of the function y(A,B)=A+B is a) AB+BB+AA b) AB+AB+AB c) BA+B+AB d) AB+AB+AB 9. What is a multiplexer? a) It is a type of decoder which decodes several inputs and gives one output b) A multiplexer is a device which converts many signals into one c) It takes one input and results into many output d) It is a type of encoder which decodes several inputs and gives one output 10. How many select lines would be required for an 8-line-to-1-line multiplexer? a) 2 b) 4 c) 8 d) 3