Abstract. A set A of positive integers is a Bh-set if all the sums of the form a1+ +ah, with
a1; : : : ; ah 2 A and a1 ah, are distinct. We provide asymptotic bounds for the number
of Bh-sets of a given cardinality contained in the interval [n] = f1; : : : ; ng. As a consequence of
our results, better upper bounds for a problem of Cameron and Erd}os (1990) in the context of
Bh-sets are obtained. We use these results to estimate the maximum size of a Bh-set contained
in a typical (random) subset of [n] with a given cardinality.