SOLUTION: I do not understand how to tell when to use combination and when to use permutation. The word problem is: Jack has seven frozen meals in his freezer. How many ways can he choose to

Question 59864: I do not understand how to tell when to use combination and when to use permutation. The word problem is: Jack has seven frozen meals in his freezer. How many ways can he choose to have them for dinner Sunday through Saturday?
Answer by funmath(2933) (Show Source): You can put this solution on YOUR website!
I do not understand how to tell when to use combination and when to use permutation.
You use permutations when order is important, like how many ways to have a phone number, social security number or liscence plate number, committee members who are president, vice pres, treas., or secr..
You use combinations when order is not important like lottery numbers, committee members (all of equal standing), cards.
The word problem is: Jack has seven frozen meals in his freezer. How many ways can he choose to have them for dinner Sunday through Saturday?
You don't need either for this problem, but you can use permutations because you are concerned with the order of the meals.
There are 7 chices the first day, 6 the second, 5 the third, 4 the fourth, 3 the fifth, 2 the sixth, and 1 the last.
7*6*5*4*3*2*1=7!= 5040 <---counting method (if I remember the terminology correctly)
7 nPr 7=5040 <---permutation
Happy Calculating!!!
RELATED QUESTIONS
Explain when to use a permutation and when to use a combination when choosing r objects... (answered by solver91311)

how do you get better in knowing if the problem is permutation and combination and how do (answered by Alan3354,Theo)

How will you know when to use permutation,combination, or probability in a problem? I am... (answered by solver91311)

It is hard to understand where to use permutation and where to use combination. I need an (answered by Edwin McCravy)

I. Seven letter words are formed using the letters of the word BLACKER. (a)How many... (answered by stanbon)

Please help me solve this extended word problem: Given the following crcumstances tell... (answered by vleith)

How many times can the word "DEFENSE" be arranged using permutation or combination? And... (answered by stanbon,Edwin McCravy)

State whether the situation involves a combination or premutation. then solve. these... (answered by longjonsilver)

Please help me understand what this problem is asking and how do I determine what... (answered by Earlsdon)