Скачать или смотреть Unit Digit का फुल फॉर्मुला और Uses 📊✔️ | Fast Calculation | Abhinay Sharma

Unit Digit का फुल फॉर्मुला और Uses 📊✔️ | Fast Calculation | Abhinay Sharma #ssc #shorts

Unit Digit का फुल फॉर्मुला और Uses 📊✔️ | Fast Calculation | Abhinay Sharma #ssc #shorts

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📌 Topics Covered in This Explanation:

✅ What is Unit Digit?
The unit digit is the rightmost digit of any number, showing how many single units are there. For example, in 739, the unit digit is 9.

✅ Why is Unit Digit Important in SSC Exams?
Many SSC questions, especially in CGL and CHSL, ask for the last digit of big multiplications or powers. Knowing how to find the unit digit fast saves time and helps solve tricky problems easily.

📘 Shortcuts and Tricks for Unit Digit:

When multiplying numbers, you only need to multiply their unit digits to find the last digit of the product.
Powers have repeating unit digit cycles (like 2⁴ ends with 6, then repeats), so you don’t need to calculate the whole power.

🔍 Important Concepts to Remember:

Unit digit repeats in cycles in powers (usually every 4 steps).
You can ignore other digits when finding the unit digit in multiplication and powers.

🧠 Problem Solving Techniques:

Break big powers into smaller cycles using modulo 4 or 5 for unit digit patterns.
Use unit digit multiplication to quickly solve big number problems.

⚡ Tricky Question Examples:

Find the unit digit of 7⁴³
Last digit of (12 × 15 × 17)

🔢 Frequently Asked Questions:

What is the last digit of a large exponent?
How to find the last digit without full multiplication?

📈 Quick Revision Tips:

Practice unit digit cycles for numbers 0-9 powers.
Memorize unit digit patterns to save time during exams.

📒 Must-Know Formulas and Tricks:

Unit digit cycles repeat every 4 powers (usually).
Unit digit of a product = unit digit of the product of unit digits.
🎯 Master these topics to boost your score in SSC CGL & other competitive exams.

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