MCQ

MCQ 11 Mark

Which of the following is the correct representation of a binary number ?

A
$(124)_2$
B
110
C
$(110)^2$
✓
$(000)_2$

Answer

Correct option: D.

$(000)_2$

(D) $(000)_2$
Explanation : The binary numbers should comprise only two digits 0 and 1 . Also, for the base, the value should be 2 and it should be written as a subscript enclosing the entire number. Hence, fourth option gives the correct representation.

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MCQ 21 Mark

Which of the following is not a binary number ?

A
1111
B
101
✓
11 E
D
000

Answer

Correct option: C.

11 E

(C) 11E
Explanation : A binary number can have only two possible digits 0 and 1 . In third option, there is an alphabet E present which makes it invalid binary number. Alphabets are only allowed in the hexadecimal number system.

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MCQ 31 Mark

The binary equivalent of the decimal number 10 is

A
10
B
10
✓
1010
D
10

Answer

Correct option: C.

1010

(C) 1010
Explanation : To get the binary equivalent of any number, we need to divide the number by 2 and obtain remainder as :

Now, we write the remainder in the reverse order as 1010 .

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MCQ 41 Mark

The value of base in binary system is

✓
2
B
8
C
10
D
1

Answer

Correct option: A.

(A) 2
Explanation: In binary number system, the value of base (radix) is 2. The binary system uses only two digits for representation of numbers, therefore its base it has chosen to be 2.

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MCQ 51 Mark

Which of the following is not a positional number system?

✓
Roman Number System
B
Octal Number System
C
Binary Number System
D
Hexadecimal Number System

Answer

Correct option: A.

Roman Number System

(A) Roman Number System
Explanation: The Roman number system isn't a positional number system since it uses symbols to represent numbers whereas the octal number system uses digits from 0-7, the Binary number system uses digits from 0-1 and the Hexadecimal number system uses digits from 0-15.

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Applied Maths MCQ

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