High school + multiplication principle - examples

On the menu are 12 kinds of meal. How many ways can we choose four different meals into the daily menu?
2. A jackpot
How many times must I play this jackpot to win? A jackpot of seven games having (1 X 2), i. E. , home win or away win.
3. No. of divisors
How many different divisors has number ??
4. 7 heroes
9 heroes galloping on 9 horses behind. How many ways can sort them behind?
5. 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?
6. Vans
In how many ways can 9 shuttle vans line up at the airport?
7. Seating
How many ways can 7 people sit on 3 numbered chairs (eg seat reservation on the train)?
8. Guests
How many ways can 5 guests sit down on 6 seats standing in a row?
9. Word
What is the probability that a random word composed of chars T, H, A, M will be MATH?
10. 2nd class variations
From how many elements you can create 6972 variations of the second class?
11. Shelf
How many ways are there to arrange 6 books on a shelf?
12. Phone numbers
How many 7-digit telephone numbers can be compiled from the digits 0,1,2,..,8,9 that no digit is repeated?
13. Football league
In the 5th football league is 10 teams. How many ways can be filled first, second and third place?
14. Playing cards
How many possible ways are to shuffle 7 playing cards?
15. 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?
16. Morse alphabet
Calculate how many words of Morse code to create compiling commas and dots in the words of one to four characters.
17. Coin and die
Flip a coin and then roll a six-sided die. How many possible combinations are there?
18. 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?
19. Subsets
How many are all subsets of set ??
20. Balls
From the urn in which are 7 white balls and 17 red, gradually drag 3-times without replacement. What is the probability that pulls balls are in order: red red red?

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