# How  0!  is equal to  1  ?

Nithin Lookose
17 Points
9 years ago

Its actually a special statement.THere isnt any proof for it. :)

macharla saikrishna
30 Points
9 years ago

It is a statment,,,,,,there are so many proofs are there,,,,

MIRIYALA SAIPUSHPARAJ
36 Points
9 years ago

It is our assumptions only.

SK.Baji Baba Shaik
31 Points
9 years ago

your are right but I want  solution for it . for example 1) 0+1=1 (by adding)

2)0x0=0  (by multiplaying)

3) 0! = 1  ( How ? )

SK.Baji Baba Shaik
31 Points
9 years ago

I WANT THE PROOFS PLEAS SEND ME .

Har Simrat Singh
42 Points
9 years ago

0! can be found using definition of nC0 which means choosing zero things out of n things which can be done by only 1 method (by not choosing any that is common sense) now nC0 = 1

this means n!/(n-0)!x0! =1

n!/n!x0! = 1

1/0! = 1

Hence 0! = 1

Shaurya Gupta
41 Points
9 years ago

n!=n(n-1)!

put n=1

1=1.0!

0!=1

please like the answer as its the only possible explanation i could get. :-)

34 Points
9 years ago

In The Formula of nCr = n!/r!×(n-r)! when r=0; then it becomes 0!= n!/0!×n! = n!/n! = 1. Hence, Proved.

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