Solution: Find two-digit numbers $x$ such that $x \equiv 4 \pmod{11}$. The numbers are $15, 26, 37, 48, 59, 70, 81, 92$. The smallest two-digit number is 15, but the question asks for "the" number, implying a unique answer. If constraints are missing, the answer could be the smallest, $oxed{15}$.

Fri, 17 Apr 2026 18:24:04 +0000

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