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Number systems: binary, decimal, hexadecimal, and conversions MCQs

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1. The base of the binary number system is:





2. The base of the decimal number system is:





3. The base of the hexadecimal number system is:





4. Correct hexadecimal representation for decimal 15 is:





5. Hexadecimal digits go from 0 to:





6. Binary number 1101 is equivalent to decimal:





7. Decimal number 25 in binary is:





8. Hexadecimal number A3 is equivalent to decimal:





9. Binary 101101 in decimal is:





10. Decimal 50 in binary is:





11. Binary 10110111 in hexadecimal is:





12. Decimal 255 in hexadecimal is:





13. Hexadecimal 3F in binary is:





14. Hexadecimal 7A in binary is:





15. Hexadecimal C2 in binary is:





16. Decimal 18 in binary is:





17. Hexadecimal 5D in decimal is:





18. Binary 111000 in hexadecimal is:





19. Hexadecimal 9F in binary is:





20. Binary 101010 in decimal is:





21. Binary addition: 1011 + 1101 = ?





22. Binary subtraction: 11011 − 10101 = ?





23. Binary multiplication: 101 × 11 = ?





24. Binary division: 11010 ÷ 10 = ?





25. Base-2 system is also called:





26. Decimal 100 in hexadecimal is:





27. Binary 11100001101 in hexadecimal is:





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