9 heroes galloping on 9 horses behind. How many ways can sort them behind?
Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):
Showing 0 comments:
Be the first to comment!
To solve this example are needed these knowledge from mathematics:
Next similar examples:
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?
- Olympics metals
In how many ways can be win six athletes medal positions in the Olympics? Metal color matters.
- Football league
In the 5th football league is 10 teams. How many ways can be filled first, second and third place?
In how many ways can be divided gold, silver and bronze medal among 21 contestant?
In how many ways can 6 shuttle vans line up at the airport?
3 children pulled 12 different toys from a box. Many ways can be divided toys so that each children had at least one toy?
- Password dalibor
Kamila wants to change the password daliborZ by a) two consonants exchanged between themselves, b) changes one little vowel to such same great vowel c) makes this two changes. How many opportunities have a choice?
- PIN - codes
How many five-digit PIN - code can we create using the even numbers?
I have 7 cups: 1 2 3 4 5 6 7. How many opportunities of standings cups are there if 1 and 2 are always neighborhood?
Uphill leads 2 paths and 1 lift. a) How many options back and forth are there? b) How many options to get there and back by not same path are there? c) How many options back and forth are there that we go at least once a lift?
Combination lock will open when the right choice of 3 numbers (from 1 to 25 inclusive) is selected. A. How many different lock combinations are possible? B. Is he combination lock named appropriately?
- Combinations 7
A multi-course meal has 3 choices. 3 appetizers, 4 main courses, and 3 desserts. How many different combinations to choose from?
- Cars plates
How many different licence plates can country have, given that they use 3 letters followed by 3 digits?
- Morse alphabet
Calculate how many words of Morse code to create compiling commas and dots in the words of one to four characters.
Determine the number of items when the count of variations of fourth class without repeating is 42 times larger than the count of variations of third class without repetition.
In the non-transparent bags are red, white, yellow, blue tokens. We 3times pull one tokens and again returned it, write down all possibilities.
- Theorem prove
We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?