Posted by Anonymous on Friday, February 15, 2013 at 2:06am.
6 people are playing Secret Santa for Christmas. They will each give one gift to someone, and each receive one gift from someone. They are not allowed to give their gift to themselves. How many different ways are there to do so?

maths  Anonymus, Friday, February 15, 2013 at 5:31am
BRILLIANT SCHOLARS ROCKS !

maths  Reiny, Friday, February 15, 2013 at 9:58am
Let's think of the question this way:
Suppose you sit the 6 people around a round table.
Then everybody gives a present to the person on their left.
So everybody has given a present and received a present.
If we change the "arrangement" of the 6 people around the table, we have a different Secret Santa arrangement.
So all we have to do is calculate the number of ways we can sit 6 people around a round table, (or let them form a circle)
that would be 6!/6 = 5! = 120
(I divided by 6. Here is why. If everybody got up and moved one to the right, the order would not change, and we can do that 6 times)

maths  debjit, Wednesday, July 3, 2013 at 2:49pm
no, its wrong
Answer This Question
Related Questions
 Math  Six people are playing Secret Santa for Christmas. They will each give ...
 Math  The clock struck midnight as the elves roared with approval for Santa to ...
 MATH  Plz I do not understand. You and your two sisters bought a gift for your ...
 english  beautiful china figures Are you look for an ideal gift for a friend or...
 please show how to set up this problem  Kim, Beth, and Jenny gave money to buy ...
 math  A store gave away a $5 gift card to every sixth customer and a $10 gift ...
 english  december is the month for gift giving.write about a gift that you ...
 math  Every cereal box has a gift inside, but you cannot tell from the outside ...
 math  Every cereal box has a gift inside, but you cannot tell from the outside ...
 Math  A music store gives every 20th customer a $5 gift card. Every 50th ...
More Related Questions