Number Systems and Codes Questions and Answers

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Q61
The binary number 101110101111010 can be written in octal as ________.
  • A 515628
  • B 565778
  • C 656278
  • D 565728
Answer: Option D
Q62
Convert 45710 to hexadecimal.
  • A 711
  • B 2C7
  • C 811
  • D 1C9
Answer: Option D
Q63
Convert the decimal number 151.75 to binary.
  • A 10000111.11
  • B 11010011.01
  • C 00111100.00
  • D 10010111.11
Answer: Option D
Q64
Convert the following octal number to binary. 1048
  • A 0010001002
  • B 1000000012
  • C 00101002
  • D 10000012
Answer: Option A
Q65
3428 is the decimal value for which of the following binary-coded decimal (BCD) groupings?
  • A 11010001001000
  • B 11010000101000
  • C 011010010000010
  • D 110100001101010
Answer: Option B
Q66
The binary-coded decimal (BCD) system can be used to represent each of the 10 decimal digits as a(n):
  • A 4-bit binary code
  • B 8-bit binary code
  • C 16-bit binary code
  • D ASCII code
Answer: Option A
Q67
The decimal number 18 is equal to the binary number ________.
  • A 11110
  • B 10001
  • C 10010
  • D 1111000
Answer: Option C
Q68
The 2's complement of 11100111 is ________.
  • A 11100110
  • B 00011001
  • C 00011000
  • D 00011010
Answer: Option B
Q69
Convert the following decimal number to BCD. 469
  • A 100101101000
  • B 010001101001
  • C 100001101001
  • D 100101100100
Answer: Option B
Q70
Express the decimal number –37 as an 8-bit number in sign-magnitude.
  • A 10100101
  • B 00100101
  • C 11011000
  • D 11010001
Answer: Option A

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