1.

Why factorial 0 is equal to 1. (0!)equal to 1

Answer» nPr=n!/(n-r)!, let permutations of n dissimilar things taken n at a time then nPr=nPn (r=n), nPn=n!/(n-n)!, nPn=n!/0!, here nPn=n!, n!=n!/0!,0!=n!/n!,0!=1 hence 0!=1
Since 1power0is equal to 1similarly 0!is also equal to 1


Discussion

No Comment Found