# Combinatorics - math word problems - last page

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: 1022

- Probability 37651

What is the probability that in a family with four children, there are: a) at least three girls b) at least one boy, If the probability of a boy is 0.51? - Records

Records indicate 90% error-free. If eight records are randomly selected, what is the probability that at least two records have no errors?

We apologize, but in this category are not a lot of examples.

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