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9th Grade > Mathematics

NUMBER SYSTEMS MCQs

Total Questions : 197 | Page 18 of 20 pages
Question 171. 4. Binary 10111111 is ________ in hexadecimal.
  1.    BF16
  2.    FB16
  3.    27716
  4.    10111111
 Discuss Question
Answer: Option A. -> BF16
Question 172. 5. Hexadecimal 44 is ________ in binary.
  1.    01000100
  2.    10011010
  3.    01011000
  4.    10001100
 Discuss Question
Answer: Option A. -> 01000100
Question 173. 7. The largest BCD number that can be represented with four binary bits is ________.
  1.    9
  2.    10
  3.    15
  4.    16
 Discuss Question
Answer: Option A. -> 9
Question 174. 9. Decimal 12 is ________ in hexadecimal.
  1.    1216
  2.    C16
  3.    A216
  4.    A16
 Discuss Question
Answer: Option B. -> C16
Question 175. 6. Resistors—usually 300 apiece—inserted between a decoder and a 7-segment display are ________.
  1.    pull-up resistors to keep logic HIGH when the input is open
  2.    sense resistors to enable a test of logic levels
  3.    current limiting resistors for the 7-segment display
  4.    surge resistors to prevent damage from power-line variations
 Discuss Question
Answer: Option C. -> current limiting resistors for the 7-segment display
Question 176. 0.  Hexadecimal AA is ________ in decimal.
  1.    16510
  2.    17010
  3.    18610
  4.    17616
 Discuss Question
Answer: Option B. -> 17010
Question 177. 4. Odd-parity 9E16 is ________ decimal.
  1.    30
  2.    158
  3.    78
  4.    Nothing. Parity does not check.
 Discuss Question
Answer: Option A. -> 30
Question 178. 2. The decimal number –128 is represented in the signed 2's complement system as ________.
  1.    1111 1110
  2.    0111 1111
  3.    1000 0000
  4.    1111 1111
 Discuss Question
Answer: Option C. -> 1000 0000
Question 179. 5. Hexadecimal 12 is ________in binary.
  1.    00010111
  2.    00010100
  3.    00010010
  4.    00100001
 Discuss Question
Answer: Option C. -> 00010010
Question 180. 6. Overflow can occur if two signed numbers are added and ________.
  1.    they have opposite signs
  2.    they have the same sign
  3.    both of the above
  4.    none of the above
 Discuss Question
Answer: Option B. -> they have the same sign

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