in Others edited by
54 views
0 votes
0 votes
Let $A, B$ be subsets of $\{0, \ldots, 9\}$. It is given that, on choosing elements $a \in A$ and $b \in B$ at random, $a+b$ takes each of the values $0, \ldots, 9$ with equal probability. Then one of $A$ or $B$ is singleton.
in Others edited by
by
54 views

Please log in or register to answer this question.

Answer: