20. In ls complement, 2s complement, and signed magnitude number format a. How many representations for zero are there? b. Using 6-bits, specify all representations of zero for each format. 21. What is the range of values for n-bit two's complement? (Give a generic form) 22. Convert the number 42310 to the following bases: a. Base 2 (Binary) b. Base 16 (Hexadecimal) c. Base 5 23. Consider the 5-bit binary number 110112, what is the base 10 value of this binary representation in the following encodings. a. Unsigned Binary b. Signed Magnitude c. Ones Complement d. Two's Complement