# HSC ICT Chapter 3 MCQ Board Question Solution Number System

### HSC ICT Chapter 3 Board Questions with Important MCQ Solutions. I hope that solving these questions will give you a good preparation.

Number system can be mainly divided into how many types?

[Ctg. Board 2016]

a) 2

b) 3

c) 8

d) 10

How many types of number system depends on the base?

[Jas. Board 2017]

a) 2

b) 4

c) 8

d) 10

How many bits are there in the number 1011?

[Ma. Board 2019]

a) 2

b) 4

c) 8

d) 10

In (1110)₂ number ‘0’ indicates-

a) BOS

b) BCD

c) LSB

d) MSB

What is the smallest unit for measurement of the memory?

a) bit

b) bytes

c) kilobytes

d) Mega bytes

What is the positional value of 4 in the number (476)₈?

a) 8

b) 64

c) 100

d) 512

Which of the following number system is non-positional number system?

a) Binary

b) Hieroglyphics

c) Decimal

d) Octal

To determine the value of a positional number it needs-

i. Base of the number

ii. Digit value

iii. The positional value of the digit

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

The number 310.76 can be-

i. Octal

ii. Decimal

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

What is the positional value of 2 in the number (A2BC.D5)₁₆ ?

a) 16

b) 100

c) 256

d) 4096

Binary numbers are-

i. used as a digital signal

ii. Comprehensive to the computer

iii. the basis of all calculations in the computer

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

The binary number system used in computers is based on the features-

i. On, Off

ii. High, Low

iii. Positive, Negative

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

What type of number is A68B?

a) Binary

b) Octal

c) Decimal

What type of number is 2BAD.8C?

[Di. Board 2019]

a) Binary

b) Octal

c) Decimal

The number 111 can be-

[Ba. Board 2017]

i. Binary

ii. Octal

iii. Decimal

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

The number 246 can be-

[Ma. Board 2017]

i. Octal

ii. Decimal

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

The number 762 can be-

[Cu. Board 2016]

i. Octal

ii. Decimal

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

### Check out the playlist below for video tutorials on all topics of number systems-

What is the base of the decimal number system?

[Jas. Board 2016]

A) 6

b) 8

c) 10

d) 16

What is the base of the octal number system?

[Jas. Board 2016, Di. Board 2016, 2017]

A) 6

b) 8

c) 10

d) 16

What is the base of the binary number system?

[Jas. Board 2016]

a) 2

b) 8

c) 10

d) 16

How many digits are in the hexadecimal number system?

a) 6

b) 8

c) 10

d) 16

Computer usually uses which number system to function?

a) Binary

b) Octal

c) Decimal

What is the binary value of 7B?

[Ma. Board 2017]

a) 1011001

b) 1111011

c) 1101111

d) 1001101

What is the binary equivalent of (12)₁₀?

[Ctg. Board 2016]

a) 1101

b) 1100

c) 1111

d) 1010

What is the 5-based value of the number (46)₁₀?

a) 110

b) 112

c) 114

d) 141

What is the equivalent hexadecimal number of (11011.110111)₂?

[Syl. Board 2019]

a) 1B.37

b) 1B.DC

c) D8.DC

d) D8.37

What is the equivalent hexadecimal number of (1110.11)₂?

[Dha. Board 2017, 2019]

a) E.A

b) E.C

c) C.E

d) E.3

Which decimal number is equivalent to (B5D)₁₆?

a) 2909

b) 3909

c) 1909

d) 4909

What is the equivalent octal value of (BFE)₁₆?

[Di. Board 2016]

a) (5774)₈

b) (5776)₈

c) (5976)₈

d) (101111111110)₈

Which 8-base number is equivalent to (3D1)₁₆?

a) 1715

b) 1718

c) 1720

d) 1721

What is the equivalent hexadecimal value of the number (43962)₁₀?

a) ABBA

c) ABC

d) DBC

What is the binary value of the number (29)₁₀?

[Ba. Board 2019]

a) 11100

b) 11011

c) 10111

d) 11101

(45)₆ = ( ? )₇

a) 39

b) 40

c) 41

d) 42

How older is (BABA)₁₆ to (DADA)₁₆?

a) (2010)₁₆

b) (2020)₁₆

c) (2030)₁₆

d) (2040)₁₆

Which of the following is the largest number?

a) (111100)₂

b) (55)₁₀

c) (101)₈

d) (46)₁₆

Equivalent value of (110110)₂ is-

[All. Board 2018]

i. (66)₈

ii. (54)₁₀

iii. (36)₁₆

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

Equivalent value of (1010)₂ is-

[Cu. Board 2017]

i. (12)₈

ii. (10)₁₀

iii. (14)₁₆

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

What is the equivalent hexadecimal number of (271)₈?

a) B5

b) B9

c) 5B

d) 9B

What is the binary value of (37.125)₁₀?

[Cu. Board 2017]

a) 100101.01

b) 100101.001

c) 101001.01

d) 101001.001

Which binary number is equivalent to (127)₈?

a) 1010101

b) 1010111

c) 1110101

d) 1011101

What is the octal form of the decimal number 91?

a) 133

b) 131

c) 331

d) 313

What is the equivalent decimal value of the number (77)₈?

a) 56

b) 63

c) 64

d) 77

If the price of a book in binary is 1001011 taka, how much in decimal?

a) 70

b) 75

c) 78

d) 80

### Check out the playlist below for video tutorials on all topics of number systems-

What is the previous number of (10)₂?

a) 00

b) 01

c) 10

d) 11

What will be in ‘?’ of the following hexadecimal sequence?

8, 9, A, B, C, D, E, F, ?

a) 01

b) 16

c) 0F

d) 10

What is the next value of the sequence 1, 8, F?

[Ctg. Board 2017]

a) A

b) B

c) 16

d) 22

What is the fourth term of the sequence 1, 8, F?

a) A

b) B

c) 16

d) 22

What is the next value of the sequence 4, 8, C?

[All Board 2018]

a) D

b) F

c) 10

d) 16

What is the 5th term of the sequence 4, 8, C?

a) D

b) F

c) 14

d) 16

What is the sixth term of the sequence 8, A, C, E?

a) F

b) G

c) 10

d) 12

What is the sum of (100)₂ and (AA)₁₆?

[Ctg. Board 2017]

a) 1AA

b) 1B

c) AF

d) AE

(1011.11)₂ + (1101.10)₂ = (?)₂

a) 10111.10

b) 11010.10

c) 11111.11

d) 11001.01

A teacher in class asked to find the sum of (1011.11)₂ and (1101.10)₂. A student wrote (11011.11)₂. How much did he write?

[Ctg. Board 2019]

a) 10.10

b) 11.10

c) 11.11

d) 101.10

What is the equivalent value of (A+B+C)₁₆?

[Cu. Board 2019]

a) (33)8

b) (100001)2

c) (ABC)16

d) (CBA)16

The value of (A)₁₆ + (10)₂ + (7)₈ can be-

[Ctg. Board 2019]

i. (13)16

ii. (23)8

iii. (10011)2

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

The value of (AB)₁₆ – (110)₂ + (17)₈ can be-

i. (B4)16

ii. (264)8

iii. (101101101)2

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

What is the previous number of (100)₈?

a) 66

b) 77

c) 88

d) 99

What is the sum of the previous and next numbers of ABC?

a) 1577

b) 1578

c) 1678

d) 1688

The average of the previous and next numbers of BC

i. (178)16

ii. (188)10

iii. (274)8

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

What is the next number of EFF?

[Syl. Board 2019]

a) 100

b) 200

c) F00

d) FF0

What is the next number of (17)₈?

[Dha. Board 2019]

a) 14

b) 15

c) 16

d) 20

What is the decimal value of (10)₂+(10)₈+(10)₁₀+(10)₁₆?

a) (26)₁₀

b) (36)₁₀

c) (46)₁₀

d) (56)₁₀

What is the previous value of (10)₁₆?

[Di. Board 2019]

a) 1

b) A

c) E

D) F

Which is the next number to 277 in octal number system?

[Cu. Board 2016]

a) 100

b) 200

c) 300

d) 400

### Check out the playlist below for video tutorials on all topics of number systems-

What is the 2’s complement of the decimal number +12?

[Ra. Board 2017]

a) 00001100

b) 11111100

c) 11110011

d) 11110100

What is the value of -5 in 2’s complement form?

[Dha. Board 2016]

a) 1101

b) 1001

c) 1010

d) 1011

Which method is used in computers or digital devices?

a) 1’s complement

b) 2’s complement

c) 10’s complement

d) Supplement to 11

What is the formula for determining 2’s complement?

a) 1’s complement + 1

b) 1’s complement – 1

c) Binary equivalent of 1’s complement + number

d) 1’s complement + 10

What is the decimal value of 11110001 which is stored in register in 2’s complement method?

a) -14

b) -15

c) -16

d) -17

What is the 2’s complement of the binary number 01010?

a) 10101

b) 10110

c) 11001

d) 10001

The binary value of (-10)₁₀ in a digital device is –

i. 10001010

ii. 11110101

iii. 11110110

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

The method used to represent the number -(42)₁₀ is-

[Ba. Board 2016]

i. Real value structure

ii. 1’s complement structure

iii. 2’s complement formation

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

How many bit of registers are required to store the number -657₁₀ in the register?

a) 8

b) 16

c) 24

d) 32

Full form of BCD-

a) Binary Compact Disc

b) Bar Coded Decimal

c) Best Coded Decimal

d) Binary Coded Decimal

How many bits in BCD?

[Ba. Board 2016]

a) 4

b) 8

c) 12

d) 16

Which BCD is equivalent to (78)₁₀?

[Ra. Board 2016]

a) 01111001

b) 01111000

c) 01101000

d) 01101100

Which is the BCD of (72)₁₀?

[Ba. Board 2016]

a) 11110

b) 111001

c) 111010

d) 01110010

What is the equivalent BCD code of (275)₁₀?

a) 010101110101

b) 001001110101

c) 001001100101

d) 001001110011

BCD of (347)₁₀ –

i. 001101001010

ii. 001101000111

iii. 011001111010

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

What is the decimal value of the code (010101100111)ₑₓ꜀ₑₛₛ₋₃?

a) (234)₁₀

b) (324)₁₀

c) (567)₁₀

d) (657)₁₀

To exchange alphanumeric data It is used –

[Ra. Board 2016]

i. ASCII

ii. EBCDIC

iii. Unicode

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

How many bits are on ASCII?

a) 4

b) 8

c) 12

d) 16

Which one is the 8-bit code?

[Jas. Board 2019]

i. ASCII

ii. EBCDIC

iii. BCD

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

English characters can be included in all microcomputers using –

[Ctg. Board 2017]

i. ASCII

ii. EBCDIC

iii. Unicode

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

How many unique characters can be specified by ASCII-8?

[Cu. Board 2017]

a) 128

b) 256

c) 512

d) 65536

How many numeric bits are in ASCII-8 code?

[Ra. Board 2016]

a) 2

b) 4

c) 8

d) 16

How many bits of code with parity bit?

[Dha. Board 2017]

a) 3

b) 4

c) 7

d) 8

Emoji used in Messenger are represented by which code?

a) BCD

b) EBCDIC

c) ASCII

d) Unicode

Bengali alphabet included in which code?

[Ra. Board 2016]

a) BCD

b) ASCII

c) EBCDIC

d) Unicode

How many symbols can be uniquely encoded using Unicode?

[All Board 2018]

a) 65533

b) 65534

c) 65535

d) 65536

How many bits are in Unicode?

[Ra. Board 2016]

a) 4

b) 8

c) 12

d) 16

Which code is currently used to include Bengali language in the computer?

[Syl. Board 2017]

a) BCD

b) ASCII

c) EBCDIC

d) Unicode

Which of the following is a 16 bit code?

[Ra. Board 2019]

a) BCD

b) ASCII

c) EBCDIC

d) Unicode

### Check out the playlist below for video tutorials on all topics of number systems-

Computer teacher Mr. Sofiq sir wrote the number (77)₈ on the board.

1. The decimal value of the number mentioned in the stem is-

[Jas. Board 2017]

a) 56

b) 63

c) 64

d) 77

2. What is the next number of stimulus number?

[Jas. Board 2017]

a) (78)₈

b) (100)₈

c) (200)₈

d) (777)₈

‘Q’ secured (100)₈ marks in ICT in the test examination.

3. The hexadecimal value of the number mentioned in the stem is-

[Ba. Board 2019]

a) 40

b) 10

c) 8

d) 4

4. What is the previous number of the stimulus number?

[Ba. Board 2019]

a) (55)₈

b) (64)₈

c) (66)₈

d) (77)₈

The teacher asked the student for the roll number. The student said roll no 1101 in binary system.

5. What is the sum of (1001)₂ with the given number of the stem?

[Cu. Board 2016]

a) (01100)₂

b) (10110)₂

c) (10010)₂

d) (11110)₂

6. Equivalent number of the stimulus roll is-

[Cu. Board 2016]

i. (13)₁₀

ii. (11)₁₆

iii. (15)₈

Which one is correct?

a) i & ii         b) i & iii

c) ii & iii       d) i, ii & iii

Mr. Atiq asked Kamal, “How old are you?” Kamal said that his age is (101101)₂.

7. The equivalent number of Kamal’s age is-

[Di. Board 2017]

a) (25)₈

b) (35)₈

c) (55)₈

d) (65)₈

8. What is Kamal’s age in binary after ten years?

[Di. Board 2017]

a) (101011)₂

b) (101110)₂

c) (101111)₂

d) (110111)₂

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