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

നേടുക Decimal Number System ഉത്തരങ്ങളും വിശദമായ പരിഹാരങ്ങളുമുള്ള മൾട്ടിപ്പിൾ ചോയ്സ് ചോദ്യങ്ങൾ (MCQ ക്വിസ്). ഇവ സൗജന്യമായി ഡൗൺലോഡ് ചെയ്യുക Decimal Number System MCQ ക്വിസ് പിഡിഎഫ്, ബാങ്കിംഗ്, എസ്എസ്‌സി, റെയിൽവേ, യുപിഎസ്‌സി, സ്റ്റേറ്റ് പിഎസ്‌സി തുടങ്ങിയ നിങ്ങളുടെ വരാനിരിക്കുന്ന പരീക്ഷകൾക്കായി തയ്യാറെടുക്കുക

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?

  1. 8
  2. 7
  3. 9
  4. 5

Answer (Detailed Solution Below)

Option 2 : 7

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:

  1. 183
  2. 194
  3. 268
  4. 269

Answer (Detailed Solution Below)

Option 2 : 194

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

  1. 456
  2. 556
  3. 750
  4. 550

Answer (Detailed Solution Below)

Option 3 : 750

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

  1. 101102
  2. 10002
  3. 101012
  4. None of these

Answer (Detailed Solution Below)

Option 3 : 101012

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 

  1. x = 9 and y = 7
  2. x = 8 and y = 6
  3. x = 7 and y = 5
  4. x = 6 and y = 4

Answer (Detailed Solution Below)

Option 2 : x = 8 and y = 6

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?

  1. 6
  2. 4
  3. 7
  4. 5

Answer (Detailed Solution Below)

Option 4 : 5

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:

Here, we have to find the binary equivalent of 17

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?

  1. 3017
  2. 4017
  3. 5017
  4. 6017

Answer (Detailed Solution Below)

Option 1 : 3017

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?

  1. 12
  2. 8
  3. 10
  4. 7

Answer (Detailed Solution Below)

Option 3 : 10

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)= [(1 × 23) + (0 × 22) + (1 × 21 ) + (0 × 20)]10

= (10)10

Decimal Number System Question 9:

Sum (89D)16 + (259)10 is:

  1. (9EA)16
  2. (3472)8
  3. (2464)10
  4. (63215)8

Answer (Detailed Solution Below)

Option 3 : (2464)10

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 _________

  1. 1MB, 1TB
  2. 1GB, 1TB
  3. 1KB, 1GB
  4. 1MB, 1GB

Answer (Detailed Solution Below)

Option 1 : 1MB, 1TB

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

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