What does '!' mean or do in maths?

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Shubham Yashu

! is called factorial . For e.g 2! = 1*2 3! = 1*2*3 = 6 4! = 1*2 *3*4 = 24 5! = 1*2*3*4*5 = 120
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Mathematics, Physics , kannada and Hindi

Factorial Eg: 3! means 3*2*1
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! Means factorial in maths...5!=5*4*3*2*1
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