8. Given the set $A$ of power functions, there are 10 odd functions, 8 increasing functions defined on $(-\infty, \infty)$, and 12 functions whose graphs pass through the origin. Therefore, the set $A$ has at least $\qquad$ elements.
8. 14

An entire function that is an odd function passing through the origin is identical to an increasing function defined on $(-\infty,+\infty)$.