Combinatorics - math word problems - page 39 of 50
Combinatorics is a part of mathematics that investigates the questions of existence, creation and enumeration (determining the number) of configurations.It deals with two basic tasks:
How many ways can we select certain objects
How many ways can we arrange certain objects
Number of problems found: 999
- Big numbers
How many natural numbers less than 10 to the sixth can be written in numbers: a) 9.8.7 b) 9.8.0 - The manufacturer
The manufacturer found that 3% of the plates produced had a malfunction. Of the complaint, 75% are first and 25% second. What is the probability of producing first and second-class plates? - Refrigerator 83310
How many possible ways can we store three lemonades, four mineral waters, and two juices in the refrigerator next to each other? - Boys and girls
There are 20 boys and ten girls in the class. How many different dance pairs can we make of them? - Year 2020
The four-digit number divided by 2020 gives a result of 1, **. (Can not be in form 1,*0. ) Write all the options. - Pages counting
There are pages numbered 2 to 104 in the book. How many digits have to be printed to number the pages? - Kids
How many different ways can sit 8 boys and 3 girls in line if girls want to sit on the edge? - Rich retirement
Health care issues are receiving much attention in both academic and political arenas. A sociologist recently surveyed citizens over 60 years of age whose net worth is too high to qualify for government health care but who have no private health insurance - Round table
Find the number of ways in which eight people can be seated at a round table, such that 2 of them always sit together. - Medicine
We test medicine on six patients. For all, the drug doesn't work. If the drug success rate of 20%, what is the probability that medicine does not work? - Dices
We will throw two dice. What is the probability that the ratio between numbers on the first and second dice will be 1:2? - Commitee
A class consists of 6 males and 7 females. How many committees of 7 are possible if the committee must consist of 2 males and 5 females? - School trip
The class has 19 students. How can students be accommodated in the hostel, where available 3× 2-bed, 3× 3-bed and 1× 4-bed rooms? (Each room has its unique number) - Themselves 33561
How many ways can a 6-member football club members choose a leader and captain from among themselves? - Two-digit 7410
How many two-digit numbers can be written using the number 0,2,6? We can also repeat the digits in the number. - Three digits number
How many are three-digit integers such that they have no digit repeats? - Event probability
The probability of event N in 5 independent experiments is 0.4. What is the probability that the event N occurs in one experiment (chance is the same)? - Bookshelf and books
How many ways can we place seven books on a bookshelf? - Ace
We pulled out one card from complete sets of playing cards (32 cards). What is the probability of pulling the ace? - Champion 5098
Compare the odds of pairs of events. A) Slovakia will be the world champion in ice hockey 2 times in a row. B) You will write all the papers this year with at least a double. C) In two years, humans will be on Mars. D) Someone in your class will write all
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