1. Puzzle A
Puzzle B

2. How many oranges does the greengrocer have?
A greengrocer wants to arrange his oranges neatly for sale. Doing this he discovers that one orange is left over when he places them in groups of three. The same happens if he tries to place them in groups of 5, 7, or 9 oranges. Only when he makes groups of 11 oranges, it fits exactly.
How many oranges does the greengrocer have?
Answer:
At least 946 oranges!

3. At least how many people are there in total?
At a family party, a grandfather, a grandmother, two fathers, two mothers, four children, three grandchildren, one brother, two sisters, two sons, two daughters, one father-in-law, one mother-in-law, and one daughter-in-law, sit at a table.
At least how many people are there in total?
Answer:
At least 7 people: