7. If you have a 12-bit number: 100110000100. Then what is its corresponding decimal value, (a) if the 12 bit number is a BCD number; i.e., (100110000100)Bcd=( ? )10? (b) if the 12 bit number is an Excess-3 number? (c) if the 12 bit number is a 6-3-1-1 coded number? (d) if the 12 bit number is a binary number? (e) if the 12 bit number is 8-4-(-2)-(-1) coded number