# 7 heroes

9 heroes galloping on 9 horses behind. How many ways can sort them behind?

Result

n =  362880

#### Solution:

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

## Next similar examples:

1. Pairs
At the table sit 8 people, 4 on one side and 4 on the other side. Among them are 3 pairs. Every pair wants to sit opposite each other. How many ways can they sit?
2. Practice
How many ways can you place 20 pupils in a row when starting on practice?
3. Vans
In how many ways can 9 shuttle vans line up at the airport?
4. Seating
How many ways can 7 people sit on 3 numbered chairs (eg seat reservation on the train)?
5. Guests
How many ways can 5 guests sit down on 6 seats standing in a row?
6. Shelf
How many ways are there to arrange 6 books on a shelf?
7. Football league
In the 5th football league is 10 teams. How many ways can be filled first, second and third place?
8. Playing cards
How many possible ways are to shuffle 7 playing cards?
9. No. of divisors
How many different divisors has number ??
10. Flags
How many different flags can be made from colors white, red, green, purple, orange, yellow, blue so that each flag consisted of three different colors?
11. 2nd class variations
From how many elements you can create 6972 variations of the second class?
12. Phone numbers
How many 9-digit telephone numbers can be compiled from the digits 0,1,2,..,8,9 that no digit is repeated?
13. Rectangles
How many rectangles with area 3032 cm2 whose sides is natural numbers are?
14. Morse alphabet
Calculate how many words of Morse code to create compiling commas and dots in the words of one to four characters.
15. Coin and die
Flip a coin and then roll a six-sided die. How many possible combinations are there?
16. Lock
Combination lock will open when the right choice of 5 numbers (from 1 to 12 inclusive) is selected. A. How many different lock combinations are possible? B. Is he combination lock named appropriately?
17. Subsets
How many are all subsets of set ??