Number System Computer MCQs for Competitive Examination Q. 1Which of the following is not a binary number? (A) 1001(B) 101(C) 1002(D) 110 Show Answer/Hide Answer Answer: (C) 1002Explanation: N/A Q. 2The base of Binary Number System is (A) 3(B) 4(C) 2(D) 0 Show Answer/Hide Answer Answer: (C) 2Explanation: N/A Q. 3Which of the following is an example of a binary number? (A) 6AH1(B) 100101(C) 20020(D) 23456 Show Answer/Hide Answer Answer: (B) 100101Explanation: N/A Q. 4What is the value of the binary number 18? (A) 10010(B) 10101(C) 10100(D) 11010 Show Answer/Hide Answer Answer: (A) 10010Explanation: N/A Q. 5The binary numbers 0 and 1 are also called (A) Bytes(B) Bits(C) Kilobytes(D) Decimal Show Answer/Hide Answer Answer: (B) BitsExplanation: N/A Q. 6Decimal equivalent to (1111)_{2 }is (A) 11(B) 10(C) 15(D) 13 Show Answer/Hide Answer Answer: (C) 15Explanation: N/A Q. 7The binary equivalent of decimal number 98 is (A) 1110001(B) 1110100(C) 1100010(D) 1111001 Show Answer/Hide Answer Answer: (C) 1100010Explanation: N/A Q. 8A device that converts from decimal to binary number is known as (A) Instructor(B) Decoder(C) Converter(D) Encoder Show Answer/Hide Answer Answer: (C) ConverterExplanation: N/A Q. 9Which of the following is a binary number? (A) 36(B) 10(C) 29(D) 12 Show Answer/Hide Answer Answer: (B) 10Explanation: N/A Q. 10The base of Octal number system is (A) 6(B) 2(C) 12(D) 8 Show Answer/Hide Answer Answer: (D) 8Explanation: N/A Q. 11Conversion of Octal number (540)_{8} to binary number is (A) (101100000)_{2}(B) (100110000)_{2}(C) (101010000)_{2}(D) (101100100)_{2} Show Answer/Hide Answer Answer: (A) (101100000)_{2}Explanation: N/A Q. 12Conversion of Octal number (352.56)_{8} to binary number is (A) (011101010.101110)_{2}(B) (011010101.101110)_{2}(C) (011101010.101010)_{2}(D) (011010110.101110)_{2} Show Answer/Hide Answer Answer: (A) (011101010.101110)_{2}Explanation: N/A Q. 13Convert the binary number (1010111100)_{2} into an octal number. (A) (1074)_{8}(B) (1257)_{8}(C) (1572)_{8}(D) (1274)_{8} Show Answer/Hide Answer Answer: (D) (1274)_{8}Explanation: N/A Q. 14Convert the Binary number (110011.100)_{2} to Decimal number. (A) (56.4)_{8}(B) (64.4)_{8}(C) (63.4)_{8}(D) (67.3)_{8} Show Answer/Hide Answer Answer: (C) (63.4)_{8}Explanation: N/A Q. 15Base of hexadecimal number system is (A) 2(B) 4(C) 8(D) 16 Show Answer/Hide Answer Answer: (D) 16Explanation: N/A Q. 16Conversion of binary number (101110)_{2} to hexadecimal is (A) (39)_{16}(B) (40)_{16}(C) (49)_{16}(D) (42)_{16} Show Answer/Hide Answer Answer: (C) (49)_{16}Explanation: N/A Q. 17Conversion of binary number (101110)_{2} to hexadecimal is (A) (35)_{16}(B) (46)_{16}(C) (2E)_{16}(D) (50)_{16} Show Answer/Hide Answer Answer: (C) (2E)_{16}Explanation: N/A Q. 18Conversion of binary number (1111011011100010)_{2} to hexadecimal is (A) (E5D2)_{16}(B) (3D7B)_{16}(C) (D3F5)_{16}(D) (C3F5)_{16} Show Answer/Hide Answer Answer: (A) (E5D2)_{16}Explanation: N/A Q. 19Convert the hexadecimal number (A2B7)_{16} to a binary number. (A) (10101101010110111)_{2}(B) (1010001001110111)_{2}(C) (1010001010110111)_{2}(D) (1010001010110100)_{2} Show Answer/Hide Answer Answer: (C) (1010001010110111)_{2}Explanation: N/A Q. 20Convert the hexadecimal number (C35D)_{16} to a binary number. (A) (1101001101010101)_{2}(B) (1100001100011001)_{2}(C) (1100001101011101)_{2}(D) (1111001101011101)_{2} Show Answer/Hide Answer Answer: (D) (1100001101011101)_{2}Explanation: N/A 1 2 » Share on facebook Share on twitter Share on linkedin Share on pinterest Share on reddit Share on whatsapp Share on email Share on telegram