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Thirty apples are distributed among 4 children and each of them can get at least one apple. For the kid who gets the most apples, what\textquotesingle s the least possible number of apples he or she can get? 
Overseas Competition->Knowledge Point->Combinatorics->Pigeonhole Principle->Simple Pigeonhole Principle Problems
$$30\div 4=7 \textbackslash{} \text{R}2$$, thus for the kid who gets the most apples, he or she can get $$7+1=8$$ apples at least. 