For your birthday, your parents take you to dinner and offer to let you have any 2 desserts on the menu. the restaurant, famous for its desserts, lists 10 on its menu. how many different combinations of 2 desserts can you order?

I think there is 90 different combinations ? 

There would be like 20 bc u multiply 2 * 10  and u get 20. but u also have one with all the others. like for instance u have  a particular flavor (in this case ima say blueberry pie) u would have blueberry pie with 9 other ones. then yea.
i hope this helps :)

The answer is the numbers between =5 and 5