Why is 0! is equal to 1 ?
harshrana010200:
it's easy
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We know that
n!=n*(n-1)!
Put n=1,
1!= 1*(1–1)!
1=1*(0!)
Therefore,
1=0!
And logically, 0! is nothing but the number of ways one can arrange zero things, or nothing, which is once!
n!=n*(n-1)!
Put n=1,
1!= 1*(1–1)!
1=1*(0!)
Therefore,
1=0!
And logically, 0! is nothing but the number of ways one can arrange zero things, or nothing, which is once!
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