1. Convert the following numbers with the indicated bases to decimal: (a) (485) (b) (A98)12 (c) (221)3 2. Determine the base of the numbers in each case for the following operations to be correct: (a) 15 x 50 = 770 (b) 135 + 40 = 205. 3. Express the following numbers as indicated below without converting to decimal: (a) (10111.011001)2 = (?): (b) (44.5C)16 = (?)4 4. Obtain the l's and 2's complements of the following binary numbers: (a) 100001 (b) 100101 (c) 11111 (d) 01010 5. Find the 9's and the 10's complement of the following decimal numbers: (a) 289983 (b) 21281 (c) 25000 (d) 00000 6. Perform the following arithmetic operations in 10's complement and present the final answer with the correct sign (+/-): (a) (-8706) - (+4378) (b) (+3195) + (-702) 7. Perform the following arithmetic operations in l's and 2's complement and present the final answer with the correct sign (+/-): (a) (-101101)-(+11011) (b) (+100010) + (-10101) 8. Determine the ranges (smallest to largest) of 16-bit binary number if it represents: (a) Signed magnitude binary number (b) Unsigned binary number. (c) Signed I's complement number. (d) Signed 2's complement number. (e) BCD number. 9. Given the following ASCII characters in hexadecimal where the leftmost bit is a parity bit: CB 46 D5 DO CD a. Convert each character to binary and decode it. b. Determine what type of parity is used? even or odd