# Combinatorics

The city has 7 fountains. Works only 6. How many options are there that can squirt ?

**Result****Leave us a comment of this math problem and its solution (i.e. if it is still somewhat unclear...):**

**Showing 0 comments:**

**Be the first to comment!**

Tips to related online calculators

#### You need to know the following knowledge to solve this word math problem:

## Next similar math problems:

- Blocks

There are 9 interactive basic building blocks of an organization. How many two-blocks combinations are there? - Olympics metals

In how many ways can be win six athletes medal positions in the Olympics? Metal color matters. - Chords

How many 4-tones chords (chord = at the same time sounding different tones) is possible to play within 7 tones? - Trinity

How many different triads can be selected from the group 43 students? - Mumbai

A job placement agency in Mumbai had to send ten students to five companies two to each. Two of the companies are in Mumbai and others are outside. Two of the students prefer to work in Mumbai while three prefer to work outside. In how many ways assignmen - A student

A student is to answer 8 out of 10 questions on the exam. a) find the number n of ways the student can choose 8 out of 10 questions b) find n if the student must answer the first three questions c) How many if he must answer at least 4 of the first 5 qu - Confectionery

The village markets have 5 kinds of sweets, one weighs 31 grams. How many different ways a customer can buy 1.519 kg sweets. - Division

Division has 18 members: 10 girls and 6 boys, 2 leaders. How many different patrols can be created, if one patrol is 2 boys, 3 girls and 1 leader? - Medals

In how many ways can be divided gold, silver and bronze medal among 21 contestant? - Disco

On the disco goes 12 boys and 15 girls. In how many ways can we select four dancing couples? - Fish tank

A fish tank at a pet store has 8 zebra fish. In how many different ways can George choose 2 zebra fish to buy? - Examination

The class is 21 students. How many ways can choose two to examination? - Menu

On the menu are 12 kinds of meal. How many ways can we choose four different meals into the daily menu? - Teams

How many ways can divide 16 players into two teams of 8 member? - Calculation of CN

Calculate: ? - Count of triangles

Given a square ABCD and on each side 8 internal points. Determine the number of triangles with vertices at these points. - Theorem prove

We want to prove the sentence: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?