Test Your Knowledge! MCQ of Number System

The history of number and number system started from the ancient time before the invention of any counting devices that had been made in the history of computer. The most commonly used number system is decimal number system which was invented by Hindu Philosophers.

Here are the MCQ challenge questions. Check your knowledge about Number System and Boolean Logic.

MCQ Number System

1 / 43

When of the inputs of two-input a XOR gate is Logic High, the output will be _____ of the other input.

NOR

NOT

XOR

None

2 / 43

An XNOR gate gives a high output

Exclusive OR gate followed by an inverter

NOT gate followed by an exclusive XOR gates

Inverter followed by an XOR gate

Complement of a NOR gate

3 / 43

In the AND gate, the output is high only if both the inputs are

Medium

Low

High

None

4 / 43

Which of the following is the Absorption Law of Boolean Algebra?

A+(A.B)=A

A.(B+c)=A.B+A.C

A+B=B+A

(A+B)+C=A+(B+C)

5 / 43

What does the symbol A represent in a hexadecimal number system?

6 / 43

Two inputs Exclusive NOR gate gives high output

Only when the both the inputs are low

Only when both the inputs are high

When one input is high and the other is low

When the both the inputs are same

7 / 43

Boolean algebra is named after ______, who used it to study human logical reasoning

Mary Anderson

Acharya Kanad

George Boole

Earle Dickson

8 / 43

Which of the following is the Roundedness Law of Boolean Algebra?

A+0=A

A+A=A

A+1=1

A+A'=1

9 / 43

If an input A is given to an inverter, the output will be

A+

A-

10 / 43

The output of two input NAND gate is high

Only if one inputs is high and the is low

If at least one of the inputs is low

Only if both the inputs are high

Only if both the inputs are low

11 / 43

Symbol: F=A.B, where '.' Implies ____ operation.

XOR

AND

NOT

12 / 43

Which of the following is the Involution Law of Boolean Algebra?

A.(B+c)=A.B+A.C

(A')'=A

A+(A.B)=A

(A+B)+C=A+(B+C)

13 / 43

Which of the following is the Associative Law of Boolean Algebra?

A+(A.B)=A

(A+B)+C=A+(B+C)

A+B=B+A

A.(B+c)=A.B+A.C

14 / 43

Which of the following is not a positional number system?

Octal number system

Decimal number system

Binary number system

Roman number system

15 / 43

Which of the following is the Commutative Law of Boolean Algebra

A+B=B+A

A.(B+c)=A.B+A.C

(A+B)+C=A+(B+C)

A+(A.B)=A

16 / 43

The maximum number of bits sufficient to represent an octal number is binary is _____.

17 / 43

Which of the following is the Identity Law of Boolean Algebra?

A+0=A

A+1=1

A+A'=1

A+A=A

18 / 43

Base of number is also called as ________.

Entity

Root

Medium

Radix

19 / 43

The base value of decimal number system is _____.

20 / 43

NAND gate means

None

Inversion followed AND gate

AND gate followed by an OR gates

AND gate followed by an inverter

21 / 43

Which of the following is valid in Boolean algebra?

None

Both A+A=2A and A+A

A+A=2A

A+A=A

22 / 43

According to De Morgans theorems, the complement of the sum of the Boolean Variables are equal to

The product of their individual complements

The complement of the sum

The sum of their individual complements

None

23 / 43

The maximum number of bits sufficient to represent hexadecimal number in binary is ______.

24 / 43

A computer language that is written in binary codes only is called _____.

C++

None Of The Option

Machine level

25 / 43

Which of the De Morgan's Law of Boolean Algebra?

(A+B)'=A'.B'

A+(A.B)=A

(A+B)+C=A+(B+C)

(A')'=A

26 / 43

The output of two input OR gage is high

If at least one of the inputs is high

Only if one input is high and the other is low

Only if both inputs are high

Only if both inputs are low

27 / 43

Which is the least significant digit of 1234?

28 / 43

An XOR gate gives a high output

Complement of OR gate

If there are even numbers of 1s in the input

All of the option

If there are odd numbers of 1s in the input

29 / 43

2's complement is used to represent signed integers, especially ____ integers.

Positive

Negative

None

Both A and B

30 / 43

Which of the following is the Complement Law of Boolean Algrebra?

A+A=A

A+A'=1

A+0=A

A+1=1

31 / 43

Which of the following is Idempotent Law of Boolean Algebra?

A+A'=1

A+0=A

A+1=1

A+A=A

32 / 43

Which of the following is universal gate?

AND

NOT

NAND

33 / 43

A basic AND gate consists of ______ inputs and an output

Four

Three

Two

One

34 / 43

Symbol: F=A+B, where '+' Implies ____ operation.

AND

XOR

NOT

35 / 43

Which of the following is the Distributive Law of Boolean Algebra?

A.(B+c)=A.B+A.C

A+(A.B)=A

A+B=B+A

(A+B)+C=A+(B+C)

36 / 43

According to De Morgan's theorems, the complement of the product of the Boolean Variables is equal to

The sum of their individual complements

The product of their individual complements

None

The complement of the sum

37 / 43

The logic expression A.B'+A'B is given by _____ gates.

NAND gate

Exclusive NOR gate

Exclusive OR gate

NOR gate

38 / 43

Which of the following is the 1's complement of 1010?

1234

0110

1011

0101

39 / 43

The output of a two input AND gate is high

Only if both the inputs are low

Only if one inputs is high and the is low

If at least one of the inputs is low

Only if both the inputs are high

40 / 43

Boolean algebra can be used to

None

Perform arithmetic equations

Simplify any algebraic expression

Solve the equations

41 / 43

When a logic circuit diagram is given, you can analyze the circuit to obtain the _____.

Result

Input

Logic expression

None

42 / 43

The value of radix of hexadecimal number system is _______.

43 / 43

The binary equivalent of 10101 to its decimal equivalent is ____.

Your score is

The average score is 66%

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