More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
ECAT Computer Science Chapter 4 Computer Arithmetic & Number System Online Test MCQs With Answers
Question # 1
Binary number 10101101 is equivalent in decimal form to.
Choose an answer
170
171
173
174
Previous
Skip
Next
Question # 2
126
8
+ 425
8
= __________
Choose an answer
111101011
2
101101001
2
101101011
2
101100011
2
Previous
Skip
Next
Question # 3
What is the octal equivalent of the binary system :10111101.?
Choose an answer
675
8
275
8
572
8
573
8
Previous
Skip
Next
Question # 4
The hexadecimal number system is widely used in analyzing and programming in.
Choose an answer
analog computers
binary computers
decimal computers
micro computers
Previous
Skip
Next
Question # 5
The binary number 101000101011 is equal to the hexadecimal number
Choose an answer
A2D
C2D
A2B
B2C
Previous
Skip
Next
Question # 6
Data is represented on a computer by means of a two-state on/off system called
Choose an answer
the octal system
the binary system
a word
ROM
Previous
Skip
Next
Question # 7
AB
16
+ CD
16
= ________
Choose an answer
101111010
2
101111000
2
101111110
2
101101000
2
Previous
Skip
Next
Question # 8
The number A9D in Hexadecimal system is equivalent to which number in binary system.
Choose an answer
101010111101
101010011101
101110011101
101010011111
Previous
Skip
Next
Question # 9
97
10
(decimal) in octal number system is equivalent to.
Choose an answer
136
8
140
8
139
8
141
8
Previous
Skip
Next
Question # 10
The main advantage of hexadecimal number is the case of conversion from hexadecimal to.
Choose an answer
ASCII code
binary
octal
decimal
Previous
Skip
Next
Question # 11
The number A9D in Hexadecimal system is equivalent to which number in decimal system.
Choose an answer
2727
2648
3717
2717
Previous
Skip
Next
Question # 12
The number 10000 would appear just immediately after.
Choose an answer
FFFF (hex)
1111 (binary)
7777 (octal)
all of the above
Previous
Skip
Next
Question # 13
Base 8 is often used in computing because.
Choose an answer
there are 8 bit in a byte
calculations become easier by using base 8
electronic circuits can be made econmically
it can represent long strings of binary 1's an 0's in a more compact form
Previous
Skip
Next
Question # 14
A letter, number, or a special character is represented by a.
Choose an answer
bit
kilobyte
byte
megabyte
Previous
Skip
Next
Question # 15
125
8
(octal) in decimal equivalent is equal to.
Choose an answer
83
10
84
10
85
10
86
10
Previous
Skip
Next
Back