Multiplication + combinatorial number - examples
In the market have 4 kinds of chocolates. How many ways can we buy 19 chocolates?
How many ways can divide 16 identical candies to 4 children?
From the five girls and four boys teachers have to choose one pair of boy and girl. A) How many such pairs of (M + F)? B) How many pairs where only boys (M + M)? C) How many are all possible pairs?
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?
- 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 w
- The camp
At the end of the camp a 8 friends exchanged addresses. Any friend gave remaining 7 friends his card. How many addresses they exchanged?
How many different committees of 6 people can be formed from a class of 30 students?
How many ways can be rewarded 9 participants with the first, second and third prize in a sports competition?
See also our combinations calculator.