This required a large number of members to make it.
This required a number of design changes to reduce costs.
Some passes require a specific number of players to form the team.
And at that power level the government requires a number of safety features.
They also required a number of major labor union concessions.
The march would be dramatic, but not require large numbers of participants.
However, such pyramids required a very large number of boys.
Field one requires a number for the proceeding associated with the issue.
Does he or she require a minimum number of guests?
The problem is simple, but it requires a number of conversion factors.