In how many distinguishable ways can the letters in the word statistics be written? Combinations The number of combinations of objects selected from a group of objects without regard to order, order does NOT matter, is: # $ = ! ( )! ! , Example: Finding the Number of Combinations A state's department of transportation plans to develop a new section of interstate highway and receives 16 bids for the project. The state plans to hire four of the bidding companies. How many different combinations