e = 1+ 1/!0+1/!2+1/!3+................
Euler number is a irrational number . Euler number have also been explain by the compound interest in which interest rate r = 100% or r=1. Euler number could also explain by the spectrum of light in which light are divided by seven colors and combination of the 7! will be next combination and so forth .. The division of cell could also the expansion of cell in the exponential way . the creation of universe and expansion of the universe (Big Bang ) could also explain by the value of e.