Variations + multiplication principle - practice problems - page 9 of 11
Number of problems found: 219
- Combinations 4762
Please calculate the possibility of combining three numbers, where each number can be from 0 to 9. For example, the number of combinations on the suitcase is equipped with close to three digits. - Salami
We have six kinds of salami that have ten pieces and one kind of salami that has four pieces. How many ways can we distinctly choose five pieces of salami? - Different 4533
Five different positive numbers are written on the board. Determine the largest possible number of pairs formed from them in which the sum of the two elements equals one of the five numbers written on the board. - There
There were 12 members on the commission. In the vote, five members were in favor, and seven members were against the proposal. In how many ways could it help the commission vote?
- Girlfriends 4107
Four girlfriends want to take a photo together. How many different ways can they stand side by side? - Four-digit 3912
Create all four-digit numbers from digits 1,2,3,4,5, which can repeat. How many are there? - Four swords
Obelix has three helmets, four swords, and five shields. How many words must you make at the blacksmith forge Metallurgix to be able to walk another 90 days in unique armor? - Tokens
The non-transparent bags are red, white, yellow, and blue tokens. We 3times pulled one token and again returned it, writing down all possibilities. - White and black balls
There are seven white and three black balls in an opaque pocket. The balls are the same size. a) Randomly pull out one ball. What is the probability that it will be white? We pull out one ball, see its color, and return it to the pocket. Then we pull out
- Options 3572
We roll three dice. Write down all the feast options. - Themselves 3463
How many different ways can members of a 7-member philatelic circle elect a secretary and a steward from among themselves? - Attempts 3460
How many attempts do I need to guess the 3-digit PIN to be sure I can guess it? - Together 3331
The group has 12 red girls and 25 blue girls in costumes. How many of them can we put together a group of 6 girls so that the four girls have red outfits? - Metals
In the Hockey World Cup, play eight teams, and determine how many ways they can win gold, silver, and bronze medals.
- Prize
How many ways can 9 participants be rewarded with the first, second, and third prizes in a sports competition? - Olympics metals
How many ways can one win six athletes' medal positions in the Olympics? Metal color matters. - Combinations of sweaters
I have four sweaters, two are white, one red and one green. How many ways can you sort it out? - Dices throws
What is the probability that the two throws of the dice: a) Six falls even once b) Six will fall at least once - Keyboards keys
Michael had small keys on the shelf, which you can see in the picture. Their tones were marked on the white keys. Little Clara found the keys. As she took them off the shelf, they fell out of her hand, and all the white keys spilled out. So that the broth
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See also our variations calculator. Variations - practice problems. Multiplication principle - practice problems.