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