How many significant digits are there in the following numbers? (a) 123.456 (b) 0.000123 (c) 1.234 106 (d) 1.2340 106 (e) 93000000 Convert the following base-2 numbers to base-10: (a) 1011 0011, (b) 0.010 011, and (c) 111.101011 20 Points For an 8-bit representation of integers, +79 can be represented as 0100 1111. Use 2's complement to find the 8-bit representation for -79