id: 06619339
dt: j
an: 2016e.00851
au: Mahmood, Munir; Mahmood, Ibtihal
ti: A simple demonstration of zero factorial equals one.
so: Int. J. Math. Educ. Sci. Technol. 47, No. 6, 959-960 (2016).
py: 2016
pu: Taylor \& Francis, Abingdon, Oxfordshire
la: EN
cc: K20
ut: factorial; bound; limit
ci:
li: doi:10.1080/0020739X.2015.1119896
ab: Summary: When asked, a number of students answer zero factorial to be zero
as a continuation to the answer of one factorial to be one. Any
instructor would then seek a justification of zero factorial to be one
from computing $_nC_n$ via the well-known combination formula. This
article conveys a simple presentation of zero factorial to be one based
on lower and upper bounds of $n$ factorial. We have not seen this
explanation covered in any algebra textbook.
rv: