🔢 Numbers & Math

Numbers ke Prakar

x = 10
y = 3.14
print(type(x))  # int
print(type(y))  # float

Arithmetic Operators

a, b = 15, 4
print(a + b)   # 19
print(a - b)   # 11
print(a * b)   # 60
print(a / b)   # 3.75
print(a // b)  # 3 (integer division)
print(a % b)   # 3 (remainder)
print(a ** b)  # 50625 (power)

Math Module

import math
print(math.sqrt(25))    # 5.0
print(math.floor(3.9))  # 3
print(math.ceil(3.1))   # 4
print(math.pi)           # 3.14159...
print(round(3.14159, 2)) # 3.14

Area Calculator

import math
r = 7
area = math.pi * r ** 2
print(f"Circle area: {area:.2f}")
l, w = 10, 5
print(f"Rectangle area: {l*w}")

Numbers — Practical Examples

# Chapter 4: Numbers — Advanced Practice
print("=== Numbers Practice ===")

# Example 1: Basic usage
result = "Python mein Numbers bahut powerful hai!"
print(result)

# Example 2: Real world use
data = ["Numbers", "Python", "Hindi", "PythonHindi.in"]
for item in data:
    print(f"Item: {item}")

print("\nPractice complete! Great job! 🎉")

Numbers ke Important Concepts

• int — Numbers mein important concept
• float — Numbers mein important concept
• complex — Numbers mein important concept
• math module — Numbers mein important concept
• round() — Numbers mein important concept
• abs() — Numbers mein important concept

Common Mistakes — Dhyan Rakho!

Practice Exercises — Khud Try Karo!

1. Is chapter ke sab code examples khud type karo — copy-paste mat karo!
2. Har example mein kuch changes karo aur dekho kya hota hai
3. Ek chhota program banao jo is chapter ke concepts use kare
4. Apne dost ya family member ko explain karo yeh concept — teaching se best practice hoti hai
5. HackerRank ya LeetCode par is topic ke easy problems solve karo

Real World mein Numbers ka Use

Summary aur Next Steps

Interview Mein Pooche Jane Wale Sawal

Aur Seekho — Resources

Python Career Guide 2026

Chapter 4 — Deep Practice aur Mastery

# Chapter 4: Numbers  Math — Advanced Examples
# Yeh code copy karo aur run karo!

# Example 1: Basic concept
print("=== Chapter 4: Numbers  Math ===")

# Example 2: List operations
items = ["Python", "Hindi", "Code", "Practice"]
for i, item in enumerate(items, 1):
    print(f"{i}. {item}")

# Example 3: Dictionary usage
chapter_info = {
    "number": 4,
    "title":  "Numbers  Math",
    "level":  "Beginner",
    "done":   False
}
for key, value in chapter_info.items():
    print(f"  {key:10}: {value}")

# Example 4: Function
def practice_summary(chapter, completed=False):
    status = "Complete ✅" if completed else "In Progress ⏳"
    return f"Chapter {chapter}: {status}"

print(practice_summary(4))
print(practice_summary(4, True))

Python Community aur Help Kaise Lein

Chapter 4 — Final Quiz aur Revision

📝 Chapter Summary

🧠 Is Chapter ke Important Concepts

💡 Pro Tips — Dhyan Rakho!

• / hamesha float deta hai: 10/5 = 2.0
• // integer result deta hai: 10//3 = 3
• % se even/odd check karo: n%2 == 0
• ** se square root: 9**0.5 = 3.0
• abs() se negative number positive karo

🏋️ Practice Karo — Khud Try Karo!

1. Calculator banao jo +,-,*,/ kare
2. Circle ka area calculate karo (pi*r*r)
3. 1 se 100 tak sab numbers ka sum nikalo
4. Even numbers 1-20 print karo modulus se
5. Salary calculator banao: basic + HRA + DA

❓ Aksar Pooche Jane Wale Sawal

📚 Numbers aur Math — Real World mein Kahan Use Hota Hai?

🎯 Is Chapter ko Master Karne ke Liye