Decimal Number System MCQ Quiz in मल्याळम - Objective Question with Answer for Decimal Number System - സൗജന്യ PDF ഡൗൺലോഡ് ചെയ്യുക
Last updated on Mar 13, 2025
Latest Decimal Number System MCQ Objective Questions
Top Decimal Number System MCQ Objective Questions
Decimal Number System Question 1:
What is the value of (111)2 in decimal number system?
Answer (Detailed Solution Below)
Decimal Number System Question 1 Detailed Solution
Given:
The number is (111)2
Calculation:
⇒ 22 × 1 + 21 × 1 + 20 × 1 = 4 + 2 + 1 = 7
∴ The required result will be 7.
Decimal Number System Question 2:
11C.0 is represented in some unknown number system. The minimum decimal equivalent of this number will be:
Answer (Detailed Solution Below)
Decimal Number System Question 2 Detailed Solution
Concept:
Let a number is represented in a base 'b' number system as b3 b2 b1 b0
The decimal equivalent of this number will be:
b3 × 23 + b2 × 22 + b1 × 21 + b0 × 20
We observe that the decimal equivalent will be minimum when the base of the number system 'b' is minimum.
Application:
The given number is 11C.0
The minimum decimal equivalent for this number is possible for a valid minimum base system for this number.
Since the largest digit in the given number is C which is expressed by 12, the minimum valid base will be 13.
∴ The minimum decimal equivalent of the given number will be:
(11 C)13 = 1 × 132 + 1 × 131 + 12 × 130
= 169 + 13 + 12
= (194)10
Decimal Number System Question 3:
Octal equivalent of (111101000)2 is
Answer (Detailed Solution Below)
Decimal Number System Question 3 Detailed Solution
Concept:
For conversion binary to octal number the binary numbers starting from the binary point, groups are made of 3 bits each, on either side of the binary point.
Decimal |
Binary |
Octal |
0 |
000 |
0 |
1 |
001 |
1 |
2 |
010 |
2 |
3 |
011 |
3 |
4 |
100 |
4 |
5 |
101 |
5 |
6 |
110 |
6 |
7 |
111 |
7 |
Application:
Binary: 111 101 000
Grouping in 3 digit:
111 |
101 |
000 |
7 |
5 |
0 |
Octal equivalent: 750
Decimal Number System Question 4:
Addition of 11012 and 10002 is
Answer (Detailed Solution Below)
Decimal Number System Question 4 Detailed Solution
n binary addition,
0 + 0 = 0 without any carry
0 + 1 = 1 without any carry
1 + 0 = 1 without any carry
1 + 1 = 0 with carry 1.
1 |
|
|
|
|
|
1 |
1 |
0 |
1 |
+ |
1 |
0 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
Hence the binary addition of (1101)2 and (1000)2 is (10101)2
Therefore correct answer is Option 3
Decimal Number System Question 5:
If (1235)x = (3033)y, where x and y indicate the bases of the corresponding numbers, then
Answer (Detailed Solution Below)
Decimal Number System Question 5 Detailed Solution
(1235)x = (3033)y
Converting both the RHS and LHS into its decimal equivalent, we get:
(x3 + 2x2 + 3x + 5)10 = (3y3 + 0y2 + 3y + 3)10
Substituting the values given in the options in above equation, we get:
x = 8 and y = 6
Proof:
Putting x = 8 in x3 + 2x2 + 3x + 5
= (8)3 + 2(8)2 + 3(8) + 5
= (669)10
Putting y = 6 in 3y3 + 0y2 + 3y + 3
= 3(6)3 + 3(6) + 3
= 3(216) + 18 + 3
= (669)10
Decimal Number System Question 6:
How many digits in binary notation are required for the decimal number 17?
Answer (Detailed Solution Below)
Decimal Number System Question 6 Detailed Solution
The correct option is 4
Concept:
Convert decimal to binary
Conversion steps:
- Divide the number by 2.
- Get the integer quotient for the next iteration.
- Get the remainder for the binary digit.
- Repeat the steps until the quotient is equal to 0.
Calculation:
2 |
17 |
1 |
2 |
8 |
0 |
2 |
4 |
0 |
2 |
2 |
0 |
|
1 |
|
So, the binary equivalent of 17 is 10001
i.e (17)10 = (10001)2
Decimal Number System Question 7:
What is the value of hexadecimal number (BC9)16 in decimal number system?
Answer (Detailed Solution Below)
Decimal Number System Question 7 Detailed Solution
Given:
The hexadecimal number is (BC9)16
Concept:
To convert hexadecimal to decimal, the following steps are involved.
1 → Multiply each digit of a hexadecimal number with powers of 16.
2 → These powers should be positive for an integral part and negative for the fractional part.
3 → Add the all multiplying digits
Calculation:
⇒ (BC9)16 = B × 162 + C × 161 + 9 × 160
⇒ (BC9)16 = 11 × 256 + 12 × 16 + 9 × 1
⇒ (BC9)16 = 2816 + 192 + 9
⇒ (BC9)16 = (3017)10
∴ The required result will be (3017)10.
Decimal Number System Question 8:
What is the decimal equivalent of the binary (1010)2?
Answer (Detailed Solution Below)
Decimal Number System Question 8 Detailed Solution
Concept:
To convert any number system into the decimal number system, multiply each position by its weight and add.
For example:
\(\begin{array}{*{20}{c}} x\\ \downarrow \\ {{b^2}} \end{array}\;\begin{array}{*{20}{c}} y\\ \downarrow \\ {{b^1}} \end{array}\;\begin{array}{*{20}{c}} z\\ \downarrow \\ {{b^0}} \end{array}\)
Analysis:
(1010)2 = [(1 × 23) + (0 × 22) + (1 × 21 ) + (0 × 20)]10
= (10)10
Decimal Number System Question 9:
Sum (89D)16 + (259)10 is:
Answer (Detailed Solution Below)
Decimal Number System Question 9 Detailed Solution
(89D)16 = 8 × 162 + 9 × 161+ 13 × 160
(89D)16 = 2048+144+13 = (2205)10
(2205)10 + (259)10 = (2464)10
Option 1:
(9EA)16 = 9 × 162 + 14× 161+ 10 × 160 = (2538)10
Option 2:
(3472)8 =3 × 83 + 4 × 82 + 7 × 81+ 2 × 80 = (1850)10
Option 3:
(2464)10
Therefore it is correct
Option 4:
(63215)8 =6 × 84 + 3 × 83 + 2 × 82 + 1 × 81+ 5 × 80 = (26253)10
Therefore Option 3 is correct.
Binary to Hexadecimal conversion table:
0000 |
0001 |
0010 |
0011 |
0100 |
0101 |
0110 |
0111 |
1000 |
1001 |
1010 |
1011 |
1100 |
1101 |
1110 |
1111 |
0 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
A |
B |
C |
D |
E |
F |
Decimal Number System Question 10:
220 bytes and 240 bytes are respectively equal to _________ and _________
Answer (Detailed Solution Below)
Decimal Number System Question 10 Detailed Solution
Memory Size are as follows:
Term |
Size (in power of 2) |
Byte (B) |
8 bits |
Kilobyte (KB) |
210 bytes |
Megabyte (MB) |
220 bytes |
Gigabyte (GB) |
230 bytes |
Terabyte (TB) |
240 bytes |
Petabyte (PB) |
250 bytes |
Exabyte (EB) |
260 bytes |
Zettabyte (ZB) |
270 bytes |
Yottabyte (YB) |
280 bytes |
Therefore 220 bytes and 240 bytes are respectively equal to 1 MB and 1 TB