If you take away one thing from today's mentalfloss.com Brain Game Tuesday Test Time challenge, remember that the Missouri - not the mighty Mississippi - is the longest river in North America, running over 2,500 miles. That said, here we go:

The Missouri River forms parts of
the borders of which FIVE U.S. states?

Here are the ANSWERS.

THE ANSWERS:

IOWA, KANSAS, MISSOURI, NEBRASKA, SOUTH DAKOTA. The river also extends into North Dakota and Montana, but does not form part of either state's borders.

Thanks for playing! Tomorrow, it's Wordplay Wednesday.