# Combinatorial number - practice problems

#### Number of problems found: 270

- C(6,3)

C(6,3) + 3 P(6,3) - Trinity

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) = - Diagonals

What x-gon has 54 diagonals? - N-gon

How many diagonals have convex 30-gon? - Four-element 16321

How many four-element combinations can we make from 10 elements? - Hockey

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? - Combinations

How many elements can form six times more combinations fourth class than the combination of the second class? - Cards

The player gets eight cards of 32. What is the probability that it gets a) all four aces b) at least one ace - Committees

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. - Blocks

There are nine interactive basic building blocks of an organization. How many two-blocks combinations are there? - Combinations

From how many elements can we create 990 combinations, 2nd class, without repeating? - Teams

How many ways can we divide 16 players into two teams of 8 members?

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