Open App

UPSC Exam > UPSC Videos > UPSC CSAT: Crash Course (English) > Practice Problems: Number System- 2

Practice Problems: Number System- 2 Video Lecture | UPSC CSAT: Crash Course (English)

FAQs on Practice Problems: Number System- 2 Video Lecture - UPSC CSAT: Crash Course (English)

1. What is the number system?

Ans. The number system is a way of representing and expressing numbers using a set of symbols or digits. It includes various systems such as the decimal system (base 10), binary system (base 2), octal system (base 8), and hexadecimal system (base 16).

2. How does the decimal number system work?

Ans. The decimal number system, also known as the base 10 system, uses 10 digits (0-9) to represent numbers. Each digit's position in a number indicates its value based on powers of 10. For example, in the number 352, the digit 3 represents 300 (3 x 10^2), the digit 5 represents 50 (5 x 10^1), and the digit 2 represents 2 (2 x 10^0).

3. What is the binary number system?

Ans. The binary number system is a base 2 system that uses only two digits, 0 and 1, to represent numbers. Each digit's position in a binary number represents its value based on powers of 2. For example, in the binary number 10110, the digit 1 in the leftmost position represents 16 (1 x 2^4), the digit 0 represents 0 (0 x 2^3), the digit 1 represents 2 (1 x 2^1), and the digit 0 in the rightmost position represents 0 (0 x 2^0).

4. How do you convert a decimal number to a binary number?

Ans. To convert a decimal number to a binary number, you can use the process of repeated division by 2. Start by dividing the decimal number by 2 and recording the remainder. Then, divide the quotient by 2 and record the remainder again. Repeat this process until the quotient becomes 0. The binary representation is obtained by writing the remainders in reverse order.

5. What is the hexadecimal number system?

Ans. The hexadecimal number system is a base 16 system that uses 16 digits, 0-9 and A-F, to represent numbers. Each digit's position in a hexadecimal number represents its value based on powers of 16. For example, in the hexadecimal number A7, the digit A represents 10 (10 x 16^1) and the digit 7 represents 7 (7 x 16^0). Hexadecimal numbers are commonly used in computer science and programming.

About this Video

4.89/5 Rating

Sep 01, 2025 Last updated

Related Exams

UPSC

Video Description: Practice Problems: Number System- 2 for UPSC 2025 is part of UPSC CSAT: Crash Course (English) preparation. The notes and questions for Practice Problems: Number System- 2 have been prepared according to the UPSC exam syllabus. Information about Practice Problems: Number System- 2 covers all important topics for UPSC 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Practice Problems: Number System- 2.

Introduction of Practice Problems: Number System- 2 in English is available as part of our UPSC CSAT: Crash Course (English) for UPSC & Practice Problems: Number System- 2 in Hindi for UPSC CSAT: Crash Course (English) course. Download more important topics related with notes, lectures and mock test series for UPSC Exam by signing up for free.

Description

Video Lecture & Questions for Practice Problems: Number System- 2 Video Lecture | UPSC CSAT: Crash Course (English) - UPSC full syllabus preparation | Free video for UPSC exam to prepare for UPSC CSAT: Crash Course (English).

Information about Practice Problems: Number System- 2

Here you can find the meaning of Practice Problems: Number System- 2 defined & explained in the simplest way possible. Besides explaining types of Practice Problems: Number System- 2 theory, EduRev gives you an ample number of questions to practice Practice Problems: Number System- 2 tests, examples and also practice UPSC tests.

	UPSC CSAT: Crash Course (English) 190 videos

UPSC CSAT: Crash Course (English)

190 videos

Join Course for Free

Explore Courses for UPSC exam