Combinatorial number - practice problems
Number of problems found: 270
C(6,3) + 3 P(6,3)
How many different triads can be selected from group 38 students?
- Calculation of CN
Calculate: (486 choose 159) - (486 choose 327)
- (2 66504
K (2, 8) + K (3, 4) =
What x-gon has 54 diagonals?
How many diagonals have convex 30-gon?
- Four-element 16321
How many four-element combinations can we make from 10 elements?
The hockey match ended 7:4. How many different matches could be?
- A pizza
A pizza place offers 14 different toppings. How many different three-topping pizzas can you order?
- 2nd class combinations
From how many elements can you create 4560 combinations of the second class?
- Different 36871
I will choose three from ten different books. How many different triplets can I choose?
- Five identical
Five identical coins are tossed. What is the probability of more than one head?
How many elements can form six times more combinations fourth class than the combination of the second class?
The player gets eight cards of 32. What is the probability that it gets a) all four aces b) at least one ace
How many different committees of 2 people can be formed from a class of 21 students?
- The six
The six boys will be led up the hill by a two-seater lift. How many options are there?
- Two-element combinations
Write all two-element combinations from elements a, b, c, and d.
There are nine interactive basic building blocks of an organization. How many two-blocks combinations are there?
From how many elements can we create 990 combinations, 2nd class, without repeating?
How many ways can we divide 16 players into two teams of 8 members?