Variations - math word problems There are 15 boys and 12 girls at the graduation party. Determine how many four couples can be selected.
2. No. of divisors How many different divisors has number ??
3. 7 heroes 9 heroes galloping on 9 horses behind. How many ways can sort them behind?
4. 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?
5. Vans In how many ways can 9 shuttle vans line up at the airport?
6. Seating How many ways can 5 people sit on 4 numbered chairs (e. G. , seat reservation on the train)?
7. Guests How many ways can 5 guests sit down on 6 seats standing in a row?
8. 2nd class variations From how many elements you can create 2450 variations of the second class?
9. Football league In the 5th football league is 10 teams. How many ways can be filled first, second and third place?
10. 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?
11. Morse alphabet Calculate how many words of Morse code to create compiling commas and dots in the words of one to four characters.
12. Coin and die Flip a coin and then roll a six-sided die. How many possible combinations are there?
13. 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?
14. N-gon How many diagonals has convex 11-gon?
15. Subsets How many are all subsets of set ??
16. Bits, bytes Calculate how many different numbers can be encoded in 16-bit binary word?
17. Hockey players After we cycle five hockey players sit down. What is the probability that the two best scorers of this crew will sit next to each other?
18. Numbers How many different 7 digit natural numbers in which no digit is repeated, can be composed from digits 0,1,2,3,4,5,6?
19. Area codes How many 6 digit area codes are possible if the first number can't be zero?
20. Toys 3 children pulled 12 different toys from a box. Many ways can be divided toys so that each children had at least one toy?

Do you have an interesting mathematical word problem that you can't solve it? Enter it, and we can try to solve it.

To this e-mail address, we will reply solution; solved examples are also published here. Please enter e-mail correctly and check whether you don't have a full mailbox.