Posted by pinky on Sunday, November 6, 2011 at 10:24pm.
A film industry screening theater has 6 seats in the first row and 5 rows in all each successive row contain one additional seat. How many seats does this theater hold?

math  Ms. Sue, Sunday, November 6, 2011 at 10:26pm
6 + 7 + 8 + 9 + 10 = ?