Computer MCQs (page 21 of 48)

Computer basics, hardware, software, networking, the internet, file formats, shortcuts and the people behind modern computing.

954 questions. Select an option to check your answer, or open "Show answer". Showing 401–420.

  1. 401.

    What is the binary equivalent of decimal 205?

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    Answer: B. 11001101

    205 = 128 + 64 + 8 + 4 + 1, so in binary it is 11001101.

  2. 402.

    What is the binary equivalent of decimal 206?

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    Answer: B. 11001110

    206 = 128 + 64 + 8 + 4 + 2, so in binary it is 11001110.

  3. 403.

    What is the binary equivalent of decimal 207?

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    Answer: C. 11001111

    207 = 128 + 64 + 8 + 4 + 2 + 1, so in binary it is 11001111.

  4. 404.

    What is the binary equivalent of decimal 208?

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    Answer: D. 11010000

    208 = 128 + 64 + 16, so in binary it is 11010000.

  5. 405.

    What is the binary equivalent of decimal 210?

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    Answer: B. 11010010

    210 = 128 + 64 + 16 + 2, so in binary it is 11010010.

  6. 406.

    What is the binary equivalent of decimal 211?

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    Answer: A. 11010011

    211 = 128 + 64 + 16 + 2 + 1, so in binary it is 11010011.

  7. 407.

    What is the binary equivalent of decimal 214?

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    Answer: C. 11010110

    214 = 128 + 64 + 16 + 4 + 2, so in binary it is 11010110.

  8. 408.

    What is the binary equivalent of decimal 217?

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    Answer: B. 11011001

    217 = 128 + 64 + 16 + 8 + 1, so in binary it is 11011001.

  9. 409.

    What is the binary equivalent of decimal 220?

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    Answer: A. 11011100

    220 = 128 + 64 + 16 + 8 + 4, so in binary it is 11011100.

  10. 410.

    What is the binary equivalent of decimal 221?

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    Answer: C. 11011101

    221 = 128 + 64 + 16 + 8 + 4 + 1, so in binary it is 11011101.

  11. 411.

    What is the binary equivalent of decimal 223?

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    Answer: B. 11011111

    223 = 128 + 64 + 16 + 8 + 4 + 2 + 1, so in binary it is 11011111.

  12. 412.

    What is the binary equivalent of decimal 226?

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    Answer: A. 11100010

    226 = 128 + 64 + 32 + 2, so in binary it is 11100010.

  13. 413.

    What is the binary equivalent of decimal 227?

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    Answer: C. 11100011

    227 = 128 + 64 + 32 + 2 + 1, so in binary it is 11100011.

  14. 414.

    What is the binary equivalent of decimal 230?

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    Answer: B. 11100110

    230 = 128 + 64 + 32 + 4 + 2, so in binary it is 11100110.

  15. 415.

    What is the binary equivalent of decimal 231?

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    Answer: D. 11100111

    231 = 128 + 64 + 32 + 4 + 2 + 1, so in binary it is 11100111.

  16. 416.

    What is the binary equivalent of decimal 233?

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    Answer: C. 11101001

    233 = 128 + 64 + 32 + 8 + 1, so in binary it is 11101001.

  17. 417.

    What is the binary equivalent of decimal 234?

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    Answer: C. 11101010

    234 = 128 + 64 + 32 + 8 + 2, so in binary it is 11101010.

  18. 418.

    What is the binary equivalent of decimal 236?

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    Answer: C. 11101100

    236 = 128 + 64 + 32 + 8 + 4, so in binary it is 11101100.

  19. 419.

    What is the binary equivalent of decimal 238?

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    Answer: B. 11101110

    238 = 128 + 64 + 32 + 8 + 4 + 2, so in binary it is 11101110.

  20. 420.

    What is the binary equivalent of decimal 239?

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    Answer: C. 11101111

    239 = 128 + 64 + 32 + 8 + 4 + 2 + 1, so in binary it is 11101111.