Greengrocer C. Carrot wants to display his stock of oranges neatly for sale. While doing this, he notices that when he arranges them in groups of three, there is always one orange left over. The same happens if he tries to arrange them in groups of 5, 7, or 9 oranges. Only when he makes groups of 11 oranges does it fit exactly.

The question: How many oranges does the greengrocer have at least?

The solution: Click here!