Fast Math Trick for Competitive Exams | Sum of First N Natural Numbers, Patwari & Govt Exam Shortcut

Описание: Learn the fastest shortcut to calculate the sum of the first N natural numbers — a must-know trick for Punjab Patwari, SSC, Railway, Banking, and all competitive exams.
In this short video, you’ll quickly understand how to solve:
• 1 to 10 = ?
• 1 to 100 = ?
• 1 to 1000 = ?
• 1 to 10000 =?

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