Find the seating capacity of a movie house with 40 rows of seats if there are 25 seats in the first row, 28 seats in the second row, 31 in the third row, and so on.

The average of six numbers is 32. The average of the first three is 26. Find the fourth number if the average of the last two is 46.

A contractor needs to plant 5 Oak trees, 9 Maple trees and 6 Poplar trees in a straight line. How many distinguishable ways can the trees be planted? change the number of Oak trees from 5 to 2. Note that this will change the total number of trees as well.  Keep the number of Maple and Poplar trees as listed in the problem.

At I Love Food restaurant, you can choose from 11 appetizers, 12 entrees and 2 desserts. How many three-course meals can you order?There are possible three-course meals.

A California license plate has 11​ digit followed by 33​ letters followed by 33​ more digits. How many California license plates are possible? Repeated digits and letters are allowed.

The Science Club has 20 male and 18 female members. How many different ways can one male and one female be selected from the club to go to a trip to the local museum?

A license plate used 2 digits followed by two letters. If the numbers 1 and 0 can not be used in the digits and the letter "O" can not be used as either letter, how many different license plates can be made?

The Maple Leafs are allowed to dress 20 players for each game.  If they dress 12 forwards, 6 defensemen and 2 goalies, how many possible starting line-ups of 3 forwards, 2 defensemen and 1 goalie are possible?

the numbers of touchdown passes that peyton manning threw in each of his 13 seasons with the indianapolis colts are below 26, 26, 33, 26,27,29, 49, 28, 31, 31, 27, 33,33 Find the five number summary?