# Digital Logic - Number representation and computer arithmetic

46:

How many 1's are present in the binary representation of 15 x 256 + 5 x 16 + 3 is

 A. 8 B. 9 C. 7 D. 11 Answer Report Discuss Option: A Explanation : Click on Discuss to view users comments. Write your comments here:
47:   What is the 2's complement representation of -5/8?
 A. 0.1010 B. 1.0111 C. -0.1101 D. 1.0110 Answer Report Discuss Option: D Explanation : Click on Discuss to view users comments. ARUMUGAM said: (4:43am on Thursday 16th May 2013) As,-5/8=-0.8125,0.8125=0.1101Negation =1.0010Adding 1 to it, 1.0011Answer shoule be 1.0011Please Check! Write your comments here: '>
48:

The result of the subtraction FD16 - 8816 is

 A. 7516 B. 6516 C. 5E16 D. 1016 Answer Report Discuss Option: A Explanation : Click on Discuss to view users comments. Write your comments here:
49:

The result of the addition (A0)16 + (613)16 is

 A. (6B3)16 B. (16 B)16 C. (A0B)16 D. (A6B)16 Answer Report Discuss Option: A Explanation : Click on Discuss to view users comments. Write your comments here:
50:

The 1's complements of the binary number 1101101 is

 A. 0000010 B. 0010010 C. 0010011 D. 1100011 Answer Report Discuss Option: B Explanation : Click on Discuss to view users comments. Write your comments here:

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