Combinatorics - math problems
Number of problems found: 366
The city has 7 fountains. Works only 6. How many options are there that can squirt ?
- Variation equation
Solve combinatorics equation: V(2, x+8)=72 . .. variations second class from x+8 items
- Calculation of CN
How many different triads can be selected from group 38 students?
Seven friends agree to send everyone a holiday card. How many postcards were sent?
In how many ways can be divided gold, silver, and bronze medal among 21 contestants?
- Pins 2
how many different possible 4 digits pins can be found on the 10-digit keypad?
- PIN - codes
How many five-digit PIN - code can we create using the even numbers?
The hockey match ended 8:2. How many different matches could be?
The class is 21 students. How many ways can choose two to examination?
How many ways can divide 16 players into two teams of 8 member?
- Task of the year
Determine the number of integers from 1 to 106 with ending four digits 2015.
- A pizza
A pizza place offers 14 different toppings. How many different three topping pizzas can you order?
- How many 2
How many three lettered words can be formed from letters A B C D E G H if repeats are: a) not allowed b) allowed
How many diagonals has convex 11-gon?
- Possible combinations - word
How many ways can the letters F, A, I, R be arranged?
What x-gon has 54 diagonals?
- First man
What is the likelihood of a random event where are five men and seven women first will leave the man?
From how many elements we can create 990 combinations 2nd class without repeating?
How many different committees of 2 people can be formed from a class of 21 students?
Would you like to compute count of combinations?