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ECAT Computer Science Chapter 4 Computer Arithmetic & Number System Online Test MCQs With Answers
Question # 1
The number A9D in Hexadecimal system is equivalent to which number in decimal system.
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2727
2648
3717
2717
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Question # 2
126
8
+ 425
8
= __________
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111101011
2
101101001
2
101101011
2
101100011
2
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Question # 3
125
8
(octal) in decimal equivalent is equal to.
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83
10
84
10
85
10
86
10
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Question # 4
What is the octal equivalent of the binary system :10111101.?
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675
8
275
8
572
8
573
8
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Question # 5
The binary number 10011101 is equal to the hexadecimal number.
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9E
9F
9D
FF
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Question # 6
Octal number system uses the digit 0 to 7. The equivalent of Octal 126 in decimal system is.
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80
82
86
84
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Question # 7
Alphanumeric characters are expressed in terms of binary codes. In ASCII (American standard Code for Information Interchange) each character is represented as a
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8 bit code
4 bit code
5 bit code
7 bit code
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Question # 8
AB
16
+ CD
16
= ________
Choose an answer
101111010
2
101111000
2
101111110
2
101101000
2
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Question # 9
The main advantage of hexadecimal number is the case of conversion from hexadecimal to.
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ASCII code
binary
octal
decimal
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Question # 10
A letter, number, or a special character is represented by a.
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bit
kilobyte
byte
megabyte
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