  In the theory of finite type submanifolds, null 2-type submanifolds are the
most simple ones, besides 1-type submanifolds (cf. e.g., [3, 12]). In
particular, the classification problems of null 2-type hypersurfaces are quite
interesting and of fundamentally important. In this paper, we prove that every
$\delta$(3)-ideal null 2-type hypersurface in a Euclidean space has constant
mean curvature and constant scalar curvature.
