Combinatorics - math word problems - page 14 of 57
Number of problems found: 1135
- Balls
The urn is eight white and six black balls. We pull four random balls. What is the probability that among them will be two white? - Variations
Find the number of items when the count of variations of the fourth class without repeating is 26 times larger than the count of variations of the third class without repetition. - Fish tank
A fish tank at a pet store has 27 zebrafish. In how many different ways can George choose 2 zebra fish to buy? - Task of the year
Find the number of integers from 1 to 106 with ending four digits 2006. - Combinatorics
The city has 7 fountains. Works only 6. How many options are there that can squirt? - Trinity - triads
How many different triads can be selected from group 36 students? - Weekly service
There are 29 pupils in the class. How many opportunities has the teacher randomly selected for two pupils to have a week-class service? - Components
The 7 white, 4 blue, and 3 red components are in the box. What is the probability that we pull one white, one blue, and one red component without returning it? - Pizza
A school survey found that 10 out of 15 students like pizza. If 5 students are chosen randomly, what is the probability that all 5 students like pizza? - Calculation of CN
Calculate: (486 choose 159) - (486 choose 327) - Examination
The class is 25 students. How many ways can we choose 5 students for examination? - Teams
How many ways can we divide 14 players into two teams of 7 members? - Confectionery
The village markets have 7 kinds of sweets. One weighs 37 grams. How many different ways can a customer buy 2.257 kg sweets? - Chords
How many 5-tónových chords (chord = at the same time sounding different tones) is possible to play within 10 tones? - Chess
How many ways can you select 4 fields on a classic chessboard with 64 fields so that fields don't have the same color? - Assume
Assume that you are to buy 5 pesos worth of candy in two different stores. In your coin purse that contains two 20-peso coins, three 10-peso coins, six 5-peso coins, and seven 1-peso coins, what is the probability of getting two consecutive 5-peso coins f - Rain probability
Last year, it rained 12 days in March. What is the probability that it rained on March 20? - Chambers
The decision-making committee consists of three people. For the commission's decision to be valid, at least two members must vote similarly. It is not possible not to vote in the commission. Everyone only votes yes or no. We assume that the first two memb - In the city 2
In the city Náhoda (Coincidence), they abolished the timetables and the city buses run completely randomly. Imagine that you are standing at a bus stop, at which 5 buses stop with numbers 12, 14, 15, 21 and 27, and you can get home by two of them. a/What - Box of donuts
Elizabeth brought a box of donuts to share. There are two dozen (24) donuts in the box, all identical in size, shape, and color. Six are jelly-filled, ten are lemon-filled, and eight are custard-filled. You randomly select one donut, eat it, and select an
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