Combinatorial number - math word problems - page 12 of 16
Number of problems found: 307
- Subsets
How many 19 element subsets can be made from the 26 element set?
- Raffle
There are 200 draws in the raffle, but only 20 of them win. What is the probability of at least four winnings for a group of people who have bought five tickets together?
- Exactly 5803
There are 15 black and 20 white balls in Destiny. How many ways can six balls be drawn to have exactly two whites between them?
- Vanilla ice cream
Alice stopped at an ice cream stand. Today they had pineapple, chocolate, yogurt, punch, vanilla, and apple ice cream on offer. Alice wants to buy two scoops of different ice cream. How many fewer options does Alice have when choosing ice cream if she kno
- Test
The teacher prepared a test with ten questions. The student can choose one correct answer from the four (A, B, C, D). The student did not get a written exam at all. What is the probability that: a) He answers half correctly. b) He answers all correctly. c
- Tournament
Six teams entered the basketball tournament. How many matches will be played if each team has to play one match with the other?
- Sum on dice
We have two dice. What is the greater likelihood of falling a total sum of 7 or 8? (write 7, 8, or 0 if the probabilities are the same)?
- Sum or product
What is the probability that two dice fall will have the sum of seven or product 12?
- Lines
How many lines can be drawn with 8 points if three points lie on one line and the other any three points do not lie on the same line?
- Intersect 5216
At how many points do ten lines intersect if no two are parallel?
- Three reds
What is the probability that all three of the seven cards will be red if three cards are drawn?
- Possibilities 5058
Adamko is two years old and does not want to clean his toys. One night, the toy fairy came to his room and saw legos, a police car, blocks, and a train lying on the floor. The fairy decided to take 3 toys from Adamko. How many choices does a trio of toys
- Roses 2
Aunt Rose went to the flower shop to buy three rose bouquets. The flower shop had white, yellow, and red roses. How many different flowers bouquets can a flower make for Aunt Rose create? Write all the bouquet options.
- VCP equation
Solve the following equation with variations, combinations, and permutations: 4 V(2,x)-3 C(2,x+ 1) - x P(2) = 0
- Test - questions
You have a test with eight questions, where you can choose from 3 answers for each question, and one answer is always correct. The probability that we answer 5 or 6 questions correctly when randomly filling in (that is, we all guess the answers) is ……. Th
- Math logic
There are 20 children in the group. Every two children have a different name. Alena and John are among them. How many ways can we choose eight children to be among the selected A) was John B) was John and Alena C) at least one was Alena, John D) maximum o
- First class
The shipment contains 40 items. 36 are first-grade, and four are defective. How many ways can we select five items so that it is no more than one defective?
- Cards
From a set of 32 cards, we randomly pull out three cards. What is the probability that it will be seven kings and an ace?
- Two aces
From a 32-card box, we randomly pick 1 card and then two more cards. What is the probability that the last two drawn cards are aces?
- Tournament 4771
Eight tennis players took part in the tennis tournament. They were divided into two groups of four. In each group, everyone played each other once. The winner of the first group played the winner of the second group in the final. They did not play other m
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