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

Which of the following is not a positional number system?

Octal number system

Binary number system

Decimal number system

Roman number system

2 / 43

The output of two input NAND 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

3 / 43

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

A+B=B+A

A+(A.B)=A

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

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

4 / 43

The output of two input OR gage is 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 high

Only if both inputs are low

5 / 43

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

Positive

Negative

None

Both A and B

6 / 43

Base of number is also called as ________.

Radix

Root

Entity

Medium

7 / 43

Which of the following is Idempotent Law of Boolean Algebra?

A+A=A

A+A'=1

A+1=1

A+0=A

8 / 43

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

A+0=A

A+A=A

A+1=1

A+A'=1

9 / 43

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

10 / 43

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

11 / 43

NAND gate means

AND gate followed by an OR gates

None

Inversion followed AND gate

AND gate followed by an inverter

12 / 43

The output of a two input AND gate is high

Only if both the inputs are low

Only if both the inputs are high

Only if one inputs is high and the is low

If at least one of the inputs is low

13 / 43

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

None

Input

Result

Logic expression

14 / 43

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

15 / 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 complement of the sum

None

The sum of their individual complements

16 / 43

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

A+A'=1

A+A=A

A+0=A

A+1=1

17 / 43

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

NAND gate

Exclusive OR gate

Exclusive NOR gate

NOR gate

18 / 43

The value of radix of hexadecimal number system is _______.

19 / 43

Which of the following is the Commutative 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

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 sum of their individual complements

The complement of the sum

21 / 43

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

A-

A+

22 / 43

An XNOR gate gives a high output

Complement of a NOR gate

Exclusive OR gate followed by an inverter

Inverter followed by an XOR gate

NOT gate followed by an exclusive XOR gates

23 / 43

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

A+1=1

A+A=A

A+0=A

A+A'=1

24 / 43

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

XOR

NOT

AND

25 / 43

A basic AND gate consists of ______ inputs and an output

One

Three

Four

Two

26 / 43

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

NOT

XOR

NOR

None

27 / 43

Which of the following is universal gate?

NOT

NAND

AND

28 / 43

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

29 / 43

Which is the least significant digit of 1234?

30 / 43

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

XOR

AND

NOT

31 / 43

Which of the following is the Absorption 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

32 / 43

Which of the following is the Distributive 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

33 / 43

Two inputs Exclusive NOR gate gives high output

Only when the both the inputs are low

When one input is high and the other is low

Only when both the inputs are high

When the both the inputs are same

34 / 43

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

0101

1011

0110

1234

35 / 43

Boolean algebra can be used to

Solve the equations

Simplify any algebraic expression

Perform arithmetic equations

None

36 / 43

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

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

(A')'=A

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

A+(A.B)=A

37 / 43

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

C++

Machine level

None Of The Option

38 / 43

The base value of decimal number system is _____.

39 / 43

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

Acharya Kanad

George Boole

Earle Dickson

Mary Anderson

40 / 43

An XOR gate gives a high output

If there are odd numbers of 1s in the input

All of the option

Complement of OR gate

If there are even numbers of 1s in the input

41 / 43

Which of the following is valid in Boolean algebra?

None

A+A=A

Both A+A=2A and A+A

A+A=2A

42 / 43

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

High

None

Medium

Low

43 / 43

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

A+(A.B)=A

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

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

(A')'=A

Your score is

The average score is 65%

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