Combinatorics - math word problems
Number of problems found: 316
- 2nd class variations
From how many elements you can create 2450 variations of the second class?
- 2nd class combinations
From how many elements you can create 4560 combinations of the second class?
- Football league
In the 5th football league is 10 teams. How many ways can be filled first, second and third place?
- Playing cards
How many possible ways are to shuffle 7 playing cards?
Determine how many ways can be chosen two representatives from 34 students to school tournament.
- Event probability
The probability of event P in 8 independent experiments is 0.33. What is the probability that the event P occurs in one experiment (probability is same)?
How many times must throw the dice, the probability of throwing at least one six was greater than 90%?
How many ways can 7 guests sit down on 8 seats standing in a row?
The probability that the bulb can operate 4000 hours is 0.3. What is the probability that exactly one of eight bulbs can operate 4000 hours?
In army regiment are six shooters. The first shooter target hit with a probability of 49%, next with 75%, 41%, 20%, 34%, 63%. Calculate the probability of target hit when shooting all at once.
How many ways can 6 people sit on 6 numbered chairs (e. G. , seat reservation on the train)?
- School trip
The class has 19 students. What different ways students can be accommodated in the hostel, where available 3× 2-bed, 3× 3-bed and 1× 4-bed rooms. (Each room has its unique number)
- Phone numbers
How many 7-digit telephone numbers can be compiled from the digits 0,1,2,..,8,9 that no digit is repeated?
How many diagonals has convex 11-gon?
At the party everyone clink with everyone. Together, they clink 406 times. How many people were at the party?
What is the probability that a family with 7 childrens have: exactly 5 girls? 7 girls and 0 boys? Consider the birth probability of a girl is 48.69% and boy 51.31%.
Would you like to compute count of combinations?