## Combinations without repetitionGiven a set
where
Jose has 9 friends that he wants to invite to dinner but he can only invite six of them at one time. Out of the nine friends many different groups can he invite?
He can do 84 different invitations.
The 'The National Lottery' is a lottery game in which you have to deal with six whole numbers between 1 and 49. How many possible combinations of six numbers are there? If a combination of 6 numbers costs €1 how much would you have to pay in order to ensure that you have chosen the winning combination of numbers.
You have to wast €13,983,816 to be sure you have chosen the winning combination of numbers. Enter any numbers n and k you want and the computer will calculate for you the number of combinations without repetition. |