Combinatorial number - practice problems - page 4 of 15
Number of problems found: 292
- Tournament
Determine how many ways can be chosen two representatives from 34 students to school tournament. - Different 65654
Jane received three different marks (1-5) during the day. How many marks did she receive? A) 6 B) 8 C) 10 D) 12 - Probability 32951
Determine the probability that when drawing three cards from a complete set of 32 marriage cards, it will be the same acorns or the kings themselves. - Determined 16233
How many lines are determined by 5 points if three lie in one line? - Triangles 8306
Find out how many triangles you create from lines 7 dm, 5 dm, 10 dm, 12 dm, and 15 dm long. - Numbers 7755
How many digits 7 are in numbers from 1 to 777? - 6 married
Six married couples are in a room. If two people are chosen at random. Find the probability that; a). they are married. b). one is male, and one is female. - Combinations
If the number of elements increases by 3, it increases the number of combinations of the second class of these elements five times. How many are the elements? - One green
In the container are 45 white and 15 green balls. We randomly select five balls. What is the probability that there will be one green ball maximally? - Count of triangles
On each side of an ABCD square is 10 internal points. Determine the number of triangles with vertices at these points. - Lines
How many points will intersect 14 different lines where no two are parallel? - Five-a-side 69434
Five children took part in the five-a-side tournament: Anka, Betka, Celeste, Dano, and Erik. Everyone played with everyone. How many games have been played? - Different 42191
How many different triangles with vertices formed by points A, B, C, D, E, and F can we create? - Chocolates 38751
Jane wants to buy six chocolates in the store. The store offers only three species of chocolates. How many options does she have? - Calculate 4349
Calculate x: (x-1) over (x-2) + (x-2) over (x-4) = 4 - Created trio
What is the probability that in the created trio, which consists of 19 boys and 12 girls, they will be: a) the boys themselves b) the girls themselves c) 2 boys and one girl? - Soccer teams
Have to organize soccer teams. There are three age groups. How many different ways can you organize ten teams for each age group? Is this a permutation or combination? - VCP equation
Solve the following equation with variations, combinations, and permutations: 4 V(2,x)-3 C(2,x+ 1) - x P(2) = 0 - Division
The division has 18 members: 10 girls, six boys, and two leaders. How many different patrols can be created if one patrol is two boys, three girls, and one leader? - travel agency
A small travel agency offers five different tours on honeymoon. What is the probability that the bride and groom choose the same tour (they choose independently)?
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