Combinatorics - math word problems - page 38 of 57
Number of problems found: 1135
- Shampoo display ways
How many ways can an arranger display five different shampoos horizontally next to each other? - People lineup probability
A group of n people, including John and Frank, randomly line up. What probability will there be exactly r people (r - Ace or king
What is the probability that we will choose an ace or a king when choosing from a deck of sevens cards? - Probability - cards
What is the probability that when dealing cards after 4, in the game Quartet (eight of fours), we will get the whole quartet? - Seven
Seven friends agreed to send everyone a holiday card. How many postcards were sent? - Six on dice
When throwing two dice, what is the probability they will fall at least one six? - Page numbering
The book has 88 pages. How many times is the number 4 used for the book numbering? - Photo arrangement
Four girlfriends want to take a photo together. How many different ways can they stand side by side? - Three dice
What is the probability that when we roll three dice, we roll the number 1,2,3? - Hearts
3 cards are chosen from a standard deck of 52 playing cards (13 hearts) with replacements. What is the probability of choosing 3 hearts in a row? - Cake ratio
On the tray, they had apricot and plum cakes in a ratio of 3:2. After eating three apricot pies, the chance of taking out a plum and apricot was the same. How many cakes were there together on the tray at the beginning? - Red balls
The bag has three red, 12 blue, and eight green balls. If we want the probability of pulling out the red balls to be 20%, how many red balls must we add to the bag? - Survey women respondents
In the survey, 2/3 of those who correctly answered the question were women. 4/5 of all respondents answered the question correctly. How many women answered correctly if a total of 900 respondents participated in the survey? What proportion of all responde - Seating rules
In a class, there are 28 seats, but in the 5.D class, there are only 24 students. How many ways can students sit? (The class has 14 benches. A bench is for a pair of students.) Result write down as powers of 10 - (logarithm - large number). - Ways
There are 3 different roads from Lehota to Hradec and 4 different roads from Hradec to Buda. Determine the number of ways to choose a route from Lehota via Hradec to Buda and back, such that no road is used twice. - Probability - shelf
Ten books are placed randomly on one shelf. Find the probability that certain three books are placed next to each other. - PIN even probability
What is the probability of guessing a PIN code (4 numbers) if it contains only even numbers? - Number digit sum
How many numbers are less than 200, the digit sum of which is 6? - PIN code probability
When entering the PIN code, we used the digits 2, 3, 4, 5, and 7 only once. What is the probability that someone will guess our PIN code on the first try? - Element arrangement ways
Determine the number of arrangements of these six elements: a, a, a, b, b, c.
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