1. The number is represented in an 8-bit signed 2's complement number is then interpreted as a BCD patter. This BCD number has a decimal equivalent of

(a) 47 (b) 51 (c) 58 (d) 66 (e) 71

2. The number is represented in BCD. This BCD pattern is then interpreted as a signed 1's complement number. This signed 1's complement number has a decimal equivalent of

(a) -100 (b) -85 (c) -67 (d) -56 (e) -122

3. 654 is a number in base

a) 7 (b) 6 (c) 5 (d) 4 (e) 3

4. The number of positive number (not counting 0) representable in a 4-bit signed 2's complement system is

a) 8 (b) 7 (c) 6 (d) 5 (e) 4

(88)10 (85)10