Factorial Explained in 1 Minute Learn 6 Factorial Trick for RPSC REET Patwari Exams Teachers Wallah

Factorial is one of the most scoring topics in Quantitative Aptitude and Mathematics for exams like RPSC, REET, LDC, Patwari, BSTC, Police, Constable, SSC GD and almost every competitive exam. Today in this short class we explain factorial meaning, factorial symbol and how to calculate factorial very quickly.

In this video you will learn what factorial means in mathematics and how it is used in number system, permutations combinations and reasoning based patterns. Students usually get confused between the exclamation mark used in English language and the same symbol used in maths. In this session you will clearly understand how to identify factorial and how to compute values instantly.

🎯 What you learn in this short
• What is factorial
• Factorial symbol meaning
• Why exclamation mark is used
• How to calculate factorial in one step
• Example 6 factorial equals 720
• Trick to remember factorial patterns
• Why zero factorial equals one and not zero
• Memory tip for exams

🧠 Exam Relevance
This topic is extremely important for
• RPSC LDC 2026
• Rajasthan CET
• REET Level 1 and Level 2
• BSTC
• SSC GD
• RSMSSB Patwari
• Police Constable
• VDO
• 2nd Grade and 3rd Grade Maths
• School Lecturer Maths concept base

Competitive exams repeatedly ask questions like
6 factorial is equals to what
0 factorial is equals to
5 factorial divided by 3 factorial equals
Permutation based value using factorial
Shortcut to expand factorial

💡 Explanation Hindi Mix
Maths me factorial का अर्थ होता है कि किसी संख्या से एक तक घटते क्रम में सभी संख्याओं का गुणन करना.
6 factorial का अर्थ है 6 x 5 x 4 x 3 x 2 x 1
इसका उत्तर हमेशा 720 आता है.
ध्यान रहे कि 0 factorial का मान शून्य नहीं होता है.
0 factorial सदैव 1 होता है और यह नियम हर competitive exam में पूछा जाता है.

📌 Remember Always
0 factorial equals 1
1 factorial equals 1
2 factorial equals 2
3 factorial equals 6
4 factorial equals 24
5 factorial equals 120
6 factorial equals 720

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