Aptitude Topics
Basics of Numbers
Learn the foundation of number systems.
Fundamental Principles
Natural Numbers
Natural numbers start from 1 and continue infinitely.
Whole Numbers
Whole numbers include 0 and all natural numbers.
Essential Formulation Tips
- Natural numbers start from 1.
- Whole numbers start from 0.
Shortcut Execution Techniques
- 2 is the only even prime number.
- Every prime number except 2 is odd.
Contextual Inquiries (FAQs)
Q: What are natural numbers?
A: Counting numbers starting from 1.
Example Breakdown: Sum of First 10 Natural Numbers
Frequently asked in aptitude exams.Problem QueryFind the sum of first 10 natural numbers.
Step-By-Step Solution Path
Formula = n(n+1)/2
10 × 11 / 2
= 55
Analytical Hint: Use the sum formula.
Basics Practice Set 1: Natural and Whole Numbers
Fundamental concepts regarding natural numbers, whole numbers, and basic operations.
Q1. Which of the following is a natural number?
Q2. Which number is the smallest whole number?
Q3. What is the sum of the first 3 natural numbers?
Q4. Is 0 a natural number?
Q5. Which set contains only whole numbers?
Q6. What is 10 multiplied by 0?
Q7. Which of these is a counting number?
Q8. The number 15 is a:
Q9. Which is greater: 10 or 100?
Q10. The number 0 is: