Question

Karl's mother buys 60 party favors to give out as gifts during Karl's birthday party. Which number of guests will not let her divide the party favors evenly among the guests?

Answer 1

1 guests= 60 favors each
2 guests= 30 favors each
3 guests= 20 favors each
4 guests= 15 favors each
5 guests= 12 favors each
6 guests= 6 favors each
7 guests= 8.571428...... each

The answer is 7 guests because 7 is not a factor of 60 and so Karl's mother can't divide up her party favors to 7 guests without having to split them up (which she most likely doesn't want to do).

Answer 2

It's 25. It's the only one not a factor of 60.