Defense lawyers also commonly use peremptory challenges with an eye toward picking a racially sympathetic jury.

Variations using 20-man and 50-man challenges have also been employed.

This government challenge platform will be available in July 2010 to help federal agencies engage the public using challenges and contests.

During the session on Monday, lawyers for both sides will use peremptory challenges to pick jurors they prefer.

The company's lawyer used peremptory challenges to remove two blacks from the jury, which found the plaintiff was 80 percent at fault in the accident.

There are no statistics on how often litigants in civil cases had used peremptory challenges based on race.

This platform is the latest milestone in the Administration's commitment to use prizes and challenges to promote innovation.

Incumbents often use such challenges as a way of eliminating opponents.

Using challenges for growth that makes future hardships more tolerable.