Factorial - math word problems
- Possible combinations - word
How many ways can the letters F, A, I, R be arranged?
How many ways can we thread 4 red, 5 blue, and 6 yellow beads onto a thread?
- Bookshelf and books
How many can we place 7 books in a bookshelf?
Of the 26 pupils in the classroom, 12 boys and 14 girls, four representatives are picked to the odds of being: a) all the girls b) three girls and one boy c) there will be at least two boys
- Three workplaces
How many ways can we divide nine workers into three workplaces if they need four workers in the first workplace, 3 in the second workplace and 2 in the third?
How many ways can you place 20 pupils in a row when starting on practice?
- Boys and girls
There are eight boys and nine girls in the class. There were six children on the trip from this class. What is the probability that left a) only boys b) just two boys
Seven classmates go every day for lunch. If they always come to the front in a different order, will be enough school year to take of all the possibilities?
- Cancel fractions
Compress the expression of factorial: (n+6)!/(n+4)!-n!/(n-2)!
- Combinations 6
6 purses 9 flaps 12 straps Every combination must include 1 purse, 1 flap, and 1 strap. How many are possible combinations?
A class has 20 students. The classroom consists of 20 desks, with 4 desks in each of 5 different rows. Amy, Bob, Chloe, and David are all friends, and would like to sit in the same row. How many possible seating arrangements are there such that Amy, Bob,
- VCP equation
Solve the following equation with variations, combinations and permutations: 4 V(2,x)-3 C(2,x+ 1) - x P(2) = 0
- Math logic
There are 20 children in the group, each two children have a different name. Alena and John are among them. How many ways can we choose 8 children to be among the selected A) was John B) was John and Alena C) at least one was Alena, John D) maximum one
If the number of elements is decreased by two the number of permutations is decreased 30 times. How many elements are?
If the number of elements increase by 3, it increases the number of combinations of the second class of these elements 5 times. How many are the elements?
Find the value of the expression: 6!·10^-3
How many ways can be rewarded 9 participants with the first, second and third prize in a sports competition?
- Permutations without repetition
From how many elements we can create 720 permutations without repetition?
- Combinations of sweaters
I have 4 sweaters two are white, 1 red and 1 green. How many ways can this done?
- Football league
In the football league is 16 teams. How many different sequence of results may occur at the end of the competition?