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

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

Exclusive OR gate

NAND gate

Exclusive NOR gate

NOR gate

2 / 43

The output of two input NAND 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

3 / 43

Which is the least significant digit of 1234?

4 / 43

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

5 / 43

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

The sum of their individual complements

None

The product of their individual complements

The complement of the sum

6 / 43

An XOR gate gives a high output

Complement of OR gate

If there are odd numbers of 1s in the input

If there are even numbers of 1s in the input

All of the option

7 / 43

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

XOR

NOT

AND

8 / 43

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

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

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

A+(A.B)=A

(A')'=A

9 / 43

An XNOR gate gives a high output

Exclusive OR gate followed by an inverter

Inverter followed by an XOR gate

Complement of a NOR gate

NOT gate followed by an exclusive XOR gates

10 / 43

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

None

Both A and B

Negative

Positive

11 / 43

Base of number is also called as ________.

Medium

Entity

Radix

Root

12 / 43

Which of the following is valid in Boolean algebra?

Both A+A=2A and A+A

A+A=A

None

A+A=2A

13 / 43

Boolean algebra can be used to

Perform arithmetic equations

None

Simplify any algebraic expression

Solve the equations

14 / 43

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

Medium

Low

High

None

15 / 43

The output of two input OR gage is high

Only if both inputs are high

If at least one of the inputs is high

Only if both inputs are low

Only if one input is high and the other is low

16 / 43

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

C++

Machine level

None Of The Option

17 / 43

Which of the following is the Commutative Law of Boolean Algebra

A+(A.B)=A

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

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

A+B=B+A

18 / 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)+C=A+(B+C)

A+B=B+A

19 / 43

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

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

A+B=B+A

A+(A.B)=A

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

20 / 43

NAND gate means

None

AND gate followed by an OR gates

AND gate followed by an inverter

Inversion followed AND gate

21 / 43

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

A-

A+

22 / 43

The base value of decimal number system is _____.

23 / 43

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

XOR

NOR

NOT

None

24 / 43

A basic AND gate consists of ______ inputs and an output

Four

One

Three

Two

25 / 43

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

A+A'=1

A+A=A

A+1=1

A+0=A

26 / 43

Which of the following is not a positional number system?

Binary number system

Octal number system

Roman number system

Decimal number system

27 / 43

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

A+A'=1

A+1=1

A+A=A

A+0=A

28 / 43

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

29 / 43

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

30 / 43

The value of radix of hexadecimal number system is _______.

31 / 43

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

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

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

A+B=B+A

A+(A.B)=A

32 / 43

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

None

Result

Input

Logic expression

33 / 43

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

0110

0101

1011

1234

34 / 43

The output of a two input AND gate is high

Only if both the inputs are high

Only if both the inputs are low

If at least one of the inputs is low

Only if one inputs is high and the is low

35 / 43

Which of the following is Idempotent Law of Boolean Algebra?

A+0=A

A+1=1

A+A'=1

A+A=A

36 / 43

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

37 / 43

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

A+A=A

A+A'=1

A+0=A

A+1=1

38 / 43

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

Earle Dickson

George Boole

Acharya Kanad

Mary Anderson

39 / 43

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

(A')'=A

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

A+(A.B)=A

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

40 / 43

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

The product of their individual complements

The sum of their individual complements

The complement of the sum

None

41 / 43

Which of the following is universal gate?

AND

NAND

NOT

42 / 43

Two inputs Exclusive NOR gate gives high output

When one input is high and the other is low

Only when both the inputs are high

When the both the inputs are same

Only when the both the inputs are low

43 / 43

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

AND

NOT

XOR

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The average score is 66%

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