Important Formulas: Number System

# Important Formulas: Number System Video Lecture | General Aptitude for GATE - Mechanical Engineering

## General Aptitude for GATE

95 videos|96 docs|107 tests

## FAQs on Important Formulas: Number System Video Lecture - General Aptitude for GATE - Mechanical Engineering

 1. What are the different types of numbers in the number system?
Ans. The different types of numbers in the number system include natural numbers, whole numbers, integers, rational numbers, and irrational numbers.
 2. How do you convert a decimal number to a fraction?
Ans. To convert a decimal number to a fraction, you can write the decimal as a fraction with the decimal part as the numerator and a power of 10 as the denominator. Simplify the fraction if possible.
 3. What is the significance of prime numbers in the number system?
Ans. Prime numbers play a crucial role in the number system as they are numbers that can only be divided by 1 and themselves. They are the building blocks of all other numbers and have various applications in mathematics and cryptography.
 4. How do you determine if a number is divisible by another number?
Ans. To determine if a number is divisible by another number, you can use the divisibility rules. For example, a number is divisible by 2 if the last digit is even, by 3 if the sum of the digits is divisible by 3, and so on.
 5. What is the significance of the number zero in the number system?
Ans. Zero is an essential number in the number system as it represents the absence of a quantity. It serves as a placeholder in the decimal system, enables arithmetic operations, and plays a crucial role in various mathematical concepts.

## General Aptitude for GATE

95 videos|96 docs|107 tests

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