WorksheetsUNIT - 2 NUMBER SYSTEM
Total questions: 92
Worksheet time: 46mins
Name
Class
Date
1.
In a number representation, which of the following term indicates the symbols used to represent a number?
a)
Digit of a Number
b)
Position of a Digit
c)
Base of a Number
d)
Index of a Number
2.
In a number representation, which of the following term indicates the value of a digit depending on its place, in the number?
a)
Digit of a Number
b)
Position of a Digit
c)
Base of a Number
d)
Index of a Number
3.
In a number representation, which of the following term indicates the total no. numerals available in a number system.
a)
Digit of a Number
b)
Position of a Digit
c)
Base of a Number
d)
Index of a Number
4.
In a number representation, which of the following term indicates how many times to use the number in a multiplication?
a)
Digit of a Number
b)
Position of a Digit
c)
Base of a Number
d)
Index of a Number
5.
Which of the following number system consists of 0 to 9 numerals?
a)
Binary Number System
b)
Decimal Number System
c)
Hexadecimal Number System
d)
Octal Number System
6.
How many no. of numerals are used in Decimal Number System?
a)
2
b)
8
c)
10
d)
16
7.
Which of the following term indicates base 2 number system?
a)
Bi
b)
Deca
c)
Hexa
d)
Octa
8.
How many no. of numerals are used in Binary Number System?
a)
2
b)
8
c)
10
d)
16
9.
Which of the following number system consists of ONLY 0s & 1s?
a)
Binary Number System
b)
Decimal Number System
c)
Hexadecimal Number System
d)
Octal Number System
10.
Which of the following term indicates the “smallest unit” of binary information?
a)
Bit
b)
Byte
c)
Nibble
d)
Word
11.
Which of the following term indicates the “group of 4 bits” in a binary information?
a)
Bit
b)
Byte
c)
Nibble
d)
Word
12.
Which of the following term indicates the “group of 8 bits” in a binary information?
a)
Bit
b)
Byte
c)
Nibble
d)
Word
13.
Which of the following term indicates the “group of 16 bits” in a binary information?
a)
Byte
b)
Double Word
c)
Nibble
d)
Word
14.
Which of the following term indicates the “group of 32 bits” in a binary information?
a)
Byte
b)
Double Word
c)
Nibble
d)
Word
15.
How many no. of nibbles are there in the given byte of data (1011 0101)2?
a)
one
b)
two
c)
three
d)
four
16.
How many no. of nibbles & no. of bytes are there in the given word of data (1110 0110 1011 0101)2?
a)
two nibbles
two bytes
b)
two nibbles
four bytes
c)
four nibbles
two bytes
d)
four nibbles
four bytes
17.
How many no. of nibbles, no. of bytes & no. of words are there in the given word of data
(1110 0110 1011 0101 0001 0011 1000 0101)2?
a)
two nibbles
two bytes
two words
b)
two nibbles
four bytes
eight words
c)
eight nibbles
four bytes
two words
d)
eight nibbles
four bytes
four words
18.
Which of the following term indicates base 8 number system?
a)
Bi
b)
Deca
c)
Hexa
d)
Octa
19.
Which of the following number system consists of 0 to 7 numerals?
a)
Binary Number System
b)
Decimal Number System
c)
Hexadecimal Number System
d)
Octal Number System
20.
How many no. of numerals are used in Octal Number System?
a)
2
b)
8
c)
10
d)
16
21.
Which of the following number system uses both numerals and alphabets?
a)
Binary Number System
b)
Decimal Number System
c)
Hexadecimal Number System
d)
Octal Number System
22.
How many total no. of symbols are used in Hexadecimal Number System?
a)
2
b)
8
c)
10
d)
16
23.
How many no. of numbers are used in Hexadecimal Number System?
a)
2
b)
8
c)
9
d)
10
24.
How many no. of alphabets are used in Hexadecimal Number System?
a)
4
b)
6
c)
8
d)
9
25.
The process used to convert a Decimal Number to Any Base Number is _______________.
a)
Grouping of 3 Bits
b)
Grouping of 4 Bits
c)
Successive Division
d)
Weigthed Multiplication
26.
The process used to convert any Base Number to a Decimal Number is _______________.
a)
Grouping of 3 Bits
b)
Grouping of 4 Bits
c)
Successive Division
d)
Weigthed Multiplication
27.
To convert a given binary number to an octal number, the binary number is grouped in ________ bits.
a)
2
b)
3
c)
4
d)
8
28.
To convert a given binary number to a hexadecimal number, the binary number is grouped in _______ bits.
a)
2
b)
3
c)
4
d)
8
29.
Which of the following is not a positional number system?
a)
Binary Number System
b)
Decimal Number System
c)
Octal Number System
d)
Roman Number System
30.
The binary equivalent of the decimal number (85)10 is __________.
a)
100100
b)
101010
c)
1010111
d)
1010101
31.
The octal equivalent of the decimal number (85)10 is __________.
a)
125
b)
215
c)
225
d)
315
32.
The hexadecimal equivalent of the decimal number (241)10 is __________.
a)
(F1)16
b)
(D3)16
c)
(E7)16
d)
(10A)16
33.
The binary equivalent of a decimal number (12.125)10 is ____________.
a)
1100.011
b)
1110.001
c)
1100.001
d)
1010.11
34.
The octal equivalent of a decimal number (35.75)10 is ____________.
a)
(42.3)8
b)
(41.2)8
c)
(43.6)8
d)
(44.4)8
35.
The hexadecimal equivalent of a decimal number (22.75)10 is ____________.
a)
(F.B6)16
b)
(10.D)16
c)
(12.A)16
d)
(16.C)16
36.
The decimal equivalent of a binary number (1010.011)2 is ____________.
a)
(10.365)10
b)
(10.375)10
c)
(11.365)10
d)
(11.375)10
37.
The octal equivalent of a binary number (1100101011.1101)2 is ____________.
a)
(1534.51)8
b)
(1453.64)8
c)
(1354.51)8
d)
(1275.75)8
38.
The hexadecimal equivalent of a binary number (100101101011.111011)2 is ____________.
a)
(96B.EC)16
b)
(9B6.AC)16
c)
(A4D.EF)16
d)
(87A.DB)16
39.
The decimal equivalent of a octal number (725.25)8 is ____________.
a)
(387.36)10
b)
(469.2)10
c)
(514.23)10
d)
(258.24)10
40.
The binary equivalent of a octal number (725.25)8 is ____________.
a)
111 011 100.011 100
b)
110 001 100.001 110
c)
101 010 111.010 101
d)
111 010 101.010 101
41.
The hexadecimal equivalent of a octal number (725.25)8 is ____________.
a)
(1A6.53)16
b)
(2BC.82)16
c)
(1D5.54)16
d)
(2F3.61)16
42.
The decimal equivalent of a hexadecimal number (AA)16 is ____________.
a)
(162)10
b)
(170)10
c)
(185)10
d)
(210)10
43.
The binary equivalent of a hexadecimal number (D7B.56)16 is ____________.
a)
1101 0111 1011.0101 0110
b)
1010 0110 1100.0101 0100
c)
1100 0111 1010.0100 0111
d)
1110 1000 1011.0111 0100
44.
The octal equivalent of a hexadecimal number (1E.53)16 is ____________.
a)
(35.684)8
b)
(34.340)8
c)
(35.599)8
d)
(36.246)8
45.
Which of the following term is NOT associated with addition operation?
a)
Augend
b)
Addend
c)
Borrow
d)
Carry
46.
Which of the following term is NOT associated with subtraction operation?
a)
Borrow
b)
Minuend
c)
Subtrahend
d)
Sum
47.
Perform the decimal addition: (579.271)10 + (68.85)10
a)
(598.421)10
b)
(654.213)10
c)
(648.121)10
d)
(681.162)10
48.
Perform the decimal numbers subtraction: (579.271)10 - (68.85)10
a)
(409.342)10
b)
(410.421)10
c)
(509.342)10
d)
(510.421)10
49.
The binary addition of 1 + 1 + 1 + 1 = ________.
a)
(0001)2
b)
(0100)2
c)
(1001)2
d)
(1111)2
50.
The binary addition of 1 + 1 + 1 = _________.
a)
Sum = 1 & Carry = 1
b)
Sum = 1 & Carry = 0
c)
Sum = 0 & Carry = 1
d)
Sum = 0 & Carry = 0
51.
The binary subtraction 0 - 1 = __________.
a)
Difference = 0 & Borrow = 1
b)
Difference = 0 & Borrow = 0
c)
Difference = 1 & Borrow = 1
d)
Difference = 1 & Borrow = 0
52.
Perform addition on two binary numbers: (01000111)2 + (00111011)2
a)
(10001010)2
b)
(10011100)2
c)
(10000010)2
d)
(11000010)2
53.
Perform subtraction of two binary numbers: (101111)2 - (010101)2
a)
(100100)2
b)
(010101)2
c)
(011010)2
d)
(011001)2
54.
Perform addition on two octal numbers: (74)8+ (651)8
a)
(645)8
b)
(745)8
c)
(725)8
d)
(625)8
55.
Perform subtraction of two octal numbers: (653)8 - (216)8
a)
(345)8
b)
(445)8
c)
(335)8
d)
(435)8
56.
Perform addition on two hexadecimal numbers: (C)16 + (E)16
a)
(19)16
b)
(1A)16
c)
(1B)16
d)
(1C)16
57.
Perform subtraction of two hexadecimal numbers: (D)16 - (7)16
a)
(6)16
b)
(7)16
c)
(8)16
d)
(9)16
58.
Perform addition on two hexadecimal numbers: (7C)16 + (6B1)16
a)
(62D)16
b)
(63D)16
c)
(72D)16
d)
(73D)16
59.
Perform subtraction of two hexadecimal numbers: (DB3)16 - (B8)16
a)
(D82)16
b)
(D94)16
c)
(C1B)16
d)
(D1B)16
60.
r’s complement is calculated with formula ___________________.
a)
(𝑟 + 𝑁)
b)
(rn)
c)
(rn + N)
d)
(rn - N)
61.
(r-1)’s complement is also called as _________________ complement of a number
a)
(rn - 1) - N
b)
(rn)
c)
(rn + N)
d)
(rn - N)
62.
10s complement is also called as Radix complement of a ___________ number.
a)
Binary
b)
Decimal
c)
Hexadecimal
d)
Octal
63.
9s complement is also called as Diminished Radix complement of a ___________ number.
a)
Binary
b)
Decimal
c)
Hexadecimal
d)
Octal
64.
9s complement of a (8)10 is ___________.
a)
(0)10
b)
(2)10
c)
(1)10
d)
(3)10
65.
9s complement of a (683)10 is ___________.
a)
(317)10
b)
(425)10
c)
(232)10
d)
(316)10
66.
10s complement of a (0)10 is ___________.
a)
(0)10
b)
(2)10
c)
(1)10
d)
(3)10
67.
10s complement of a (778)10 is ___________.
a)
(322)10
b)
(323)10
c)
(222)10
d)
(232)10
68.
2s complement is also called as Radix complement of a ___________ number.
a)
Binary
b)
Decimal
c)
Hexadecimal
d)
Octal
69.
1s complement is also called as Diminished Radix complement of a ___________ number.
a)
Binary
b)
Decimal
c)
Hexadecimal
d)
Octal
70.
1’s complement can be easily obtained by using _________
a)
Comparator
b)
Inverter
c)
Adder
d)
Subtractor
71.
1s complement of a (1)2 is ___________.
a)
(0)2
b)
(1)2
c)
(10)2
d)
(11)2
72.
1s complement of a (101101)2 is ___________.
a)
(011010)2
b)
(010010)2
c)
(010110)2
d)
(001001)2
73.
1s complement of a (1011.0110)2 is ___________.
a)
(0111.1101)2
b)
(0101.0101)2
c)
(0110.1010)2
d)
(0100.1001)2
74.
2s complement of a (10000)2 is ___________.
a)
(01111)2
b)
(01100)2
c)
(10000)2
d)
(01101)2
75.
2s complement of a (11010010.100)2 is ___________.
a)
(00101110.011)2
b)
(01101001.001)2
c)
(00101101.100)2
d)
(01110101.110)2
76.
The two complement in binary system is useful for expressing
a)
Positive Numbers
b)
Negative Numbers
c)
Both Positive & Negative Numbers
d)
None of the above
77.
Identify the type of a binary code in which EACH DIGIT of a decimal number is represented by a separate group of 4 bits.
a)
BCD Code
b)
GRAY Code
c)
EBCDIC Code
d)
ASCII Code
78.
Which of the following binary code is a Weighted Binary Code?
a)
ASCII Code
b)
BCD Code
c)
EBCDIC Code
d)
GRAY Code
79.
Binary coded decimal is a combination of __________ bits.
a)
two
b)
three
c)
four
d)
five
80.
What is alternate name for 8421 Binary Code?
a)
ASCII Code
b)
BCD Code
c)
EBCDIC Code
d)
GRAY Code
81.
Which of the following is an invalid BCD code?
a)
(0110)2
b)
(0011)2
c)
(1001)2
d)
(1101)2
82.
Represent decimal number (10) in its equivalent BCD form.
a)
(1010)2
b)
(0001 0000)2
c)
(1010 0000)2
d)
(0011 1010)2
83.
Identify the type of a binary code in which EACH successive code differs from its preceding (previous) code by a SINGLE BIT ONLY.
a)
BCD Code
b)
GRAY Code
c)
EBCDIC Code
d)
ASCII Code
84.
Which of the following binary code/s is/are Non-Weighted Binary Code/s?
a)
BCD Code
b)
GRAY Code
c)
EBCDIC Code
d)
Both b & c
85.
Find out equivalent Excess-3 Code for the given Decimal number (6).
a)
(0110)2
b)
(0011)2
c)
(1001)2
d)
(1101)2
86.
How many individual bits are used by an ASCII code to represent any given character?
a)
3
b)
4
c)
7
d)
8
87.
How many individual bits are used by an EBCDIC code to represent any given character?
a)
3
b)
4
c)
7
d)
8
88.
Which of the following circuit is used to generate Parity Bit?
a)
Error Detector Circuit
b)
Parity Generator Circuit
c)
Error Correction Circuit
d)
Parity Checker Circuit
89.
Which of the following circuit is used to check Parity Bit generated is correct or not?
a)
Error Detector Circuit
b)
Parity Generator Circuit
c)
Error Correction Circuit
d)
Parity Checker Circuit
90.
A given digital binary number has even parity ______________.
a)
if it has even no. of 1s
b)
if it has even no. of 0s
c)
if it has odd no. of 1s
d)
if it has odd no. of 0s
91.
When using even parity, where is the parity bit placed?
a)
Before the MSB
b)
After the LSB
c)
In the Parity Word
d)
After the Odd Parity Bit
92.
Convert the Gray code 1011 to binary.
a)
1011
b)
1010
c)
1001
d)
1101
100 %
