I would say 77 because if there are 77 books, you could put each different book in a different place 77 times.
2 = piles
5.This question is the same as asking how many factors does 18 have.18 has the following factors:1, 18, 2, 9, 3 & 6.Therefore you could pile the books 6 different ways.However, as the question says equal piles (plural) then I think we should probably discount 1 pile of 18 books, so the answer is 5.
240. 120 ways with the books stacked verticly, and 120 ways with the books stacked horizontaly, or one on top of the other.
35
You can wind up with 10 different pairs of books in your hand, which you can choose from a shelf of 5 books in 20 different ways.
7654321 = 7! = 5,040
i think about 5929 ways
5.This question is the same as asking how many factors does 18 have.18 has the following factors:1, 18, 2, 9, 3 & 6.Therefore you could pile the books 6 different ways.However, as the question says equal piles (plural) then I think we should probably discount 1 pile of 18 books, so the answer is 5.
10!/5!x5! 3,628,800/14,400 252. There are 252 ways.
Use the factors of the number. Factors of 10 are... 1,2,5 & 10. Therefore they will stack either in 1 row of 10 books or 2 rows of 5.
You can get a picnic basket and stack them up in there. Another trick is to stack them on a bookshelf if you have one. Simply place them between two hard books to keep them upright.
A deck can be divided into 3 piles with different numbers in each pile in 225 ways. This answer does not consider which cards are in which pile - only the number of cards in each pile.A deck can be divided into 3 piles with different numbers in each pile in 225 ways. This answer does not consider which cards are in which pile - only the number of cards in each pile.A deck can be divided into 3 piles with different numbers in each pile in 225 ways. This answer does not consider which cards are in which pile - only the number of cards in each pile.A deck can be divided into 3 piles with different numbers in each pile in 225 ways. This answer does not consider which cards are in which pile - only the number of cards in each pile.
240. 120 ways with the books stacked verticly, and 120 ways with the books stacked horizontaly, or one on top of the other.
35
93
210 ways.
(5x4x3)/(3x2x1) = 10
6 ways