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

Two inputs Exclusive NOR gate gives high output

When one input is high and the other is low

When the both the inputs are same

Only when both the inputs are high

Only when the both the inputs are low

2 / 43

Which is the least significant digit of 1234?

3 / 43

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

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

A+(A.B)=A

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

A+B=B+A

4 / 43

Which of the following is valid in Boolean algebra?

A+A=2A

None

A+A=A

Both A+A=2A and A+A

5 / 43

Which of the following is Idempotent Law of Boolean Algebra?

A+A=A

A+1=1

A+0=A

A+A'=1

6 / 43

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

1011

0101

1234

0110

7 / 43

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

8 / 43

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

9 / 43

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

NAND gate

NOR gate

Exclusive OR gate

Exclusive NOR gate

10 / 43

Which of the following is the Commutative 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

11 / 43

Which of the following is universal gate?

NOT

AND

NAND

12 / 43

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

The product of their individual complements

None

The complement of the sum

The sum of their individual complements

13 / 43

Which of the following is not a positional number system?

Roman number system

Octal number system

Decimal number system

Binary number system

14 / 43

NAND gate means

None

Inversion followed AND gate

AND gate followed by an inverter

AND gate followed by an OR gates

15 / 43

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

NOT

AND

XOR

16 / 43

The output of a two input AND gate is high

If at least one of the inputs is low

Only if one inputs is high and the is low

Only if both the inputs are high

Only if both the inputs are low

17 / 43

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

NOT

None

NOR

XOR

18 / 43

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

The complement of the sum

The sum of their individual complements

None

The product of their individual complements

19 / 43

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

20 / 43

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

A+A=A

A+A'=1

A+0=A

A+1=1

21 / 43

The output of two input OR gage is high

Only if both inputs are high

Only if one input is high and the other is low

If at least one of the inputs is high

Only if both inputs are low

22 / 43

Base of number is also called as ________.

Radix

Medium

Root

Entity

23 / 43

An XNOR gate gives a high output

Inverter followed by an XOR gate

Exclusive OR gate followed by an inverter

Complement of a NOR gate

NOT gate followed by an exclusive XOR gates

24 / 43

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

A+A=A

A+0=A

A+A'=1

A+1=1

25 / 43

Boolean algebra can be used to

Simplify any algebraic expression

None

Solve the equations

Perform arithmetic equations

26 / 43

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

A+(A.B)=A

(A')'=A

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

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

27 / 43

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

28 / 43

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

A+0=A

A+A'=1

A+1=1

A+A=A

29 / 43

The value of radix of hexadecimal number system is _______.

30 / 43

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

Result

Input

None

Logic expression

31 / 43

Which of the following is the Absorption 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

32 / 43

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

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

A+(A.B)=A

A+B=B+A

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

33 / 43

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

A+

A-

34 / 43

The base value of decimal number system is _____.

35 / 43

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

Positive

Negative

None

Both A and B

36 / 43

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

NOT

XOR

AND

37 / 43

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

(A')'=A

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

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

A+(A.B)=A

38 / 43

A basic AND gate consists of ______ inputs and an output

Four

One

Three

Two

39 / 43

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

George Boole

Acharya Kanad

Mary Anderson

Earle Dickson

40 / 43

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

Medium

None

High

Low

41 / 43

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

C++

None Of The Option

Machine level

42 / 43

An XOR gate gives a high output

Complement of OR gate

If there are odd numbers of 1s in the input

All of the option

If there are even numbers of 1s in the input

43 / 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 low

Only if both the inputs are high

Your score is

The average score is 66%

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