Table of Contents

- 1 How many relations are possible from a set A to B having 3 and 4 elements respectively?
- 2 How many relations can be defined from A to B?
- 3 How many relations are possible in set A having 3 elements?
- 4 How many relations are there?
- 5 How do you calculate total number of relationships?
- 6 How many relations are possible from a set A of N elements to another set B of M elements?
- 7 How many number of relations are there on a set A having n elements?
- 8 How many relations are there between A and B?
- 9 How many (NxM) relations can be defined from a to B?
- 10 How many distinct relations can be defined over a?

## How many relations are possible from a set A to B having 3 and 4 elements respectively?

If A has four elements and B has three elements, then AxB has 4*3=12 elements. So the question becomes, How many subsets are there of a 12-element set? The number of subsets of an n element set is 2^n, so the number of relations on AxB is 2^12=4096.

## How many relations can be defined from A to B?

Counting relations. Since any subset of A × B is a relation from A to B, it follows that if A and B are finite sets then the number of relations from A to B is 2|A×B| = 2|A|·|B|. One way to see this is as the number of subsets of A × B.

**How many relations are possible in a set A if’n a 4?**

Now, any subset of AXA will be a relation, as we know that with n elements, 2^n subsets are possible, So in this case, there are 2^4=16 total possible relations.

### How many relations are possible in set A having 3 elements?

Answer: A relation is just a subset of A×A, and so there are 2n2 relations on A. So a 3-element set has 29 = 512 possible relations.

### How many relations are there?

There are 9 types of relations in maths namely: empty relation, full relation, reflexive relation, irreflexive relation, symmetric relation, anti-symmetric relation, transitive relation, equivalence relation, and asymmetric relation.

**How many relations are possible in a set of Na 3?**

A relation is just a subset of A×A, and so there are 2n2 relations on A. So a 3-element set has 29 = 512 possible relations.

#### How do you calculate total number of relationships?

Based on the text, the number of relations between sets can be calculated using 2mn where m and n represent the number of members in each set.

#### How many relations are possible from a set A of N elements to another set B of M elements?

Answer: If there are n elements in the set A and m elements in the set B, then there will be (nxm) elements in AxB . Accordingly, there will be 2^(nxm) subsets of AxB and therefore there can be defined 2^(nxm) relations from A to B .

**How do you find the number of relations?**

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## How many number of relations are there on a set A having n elements?

If a set A has n elements then number of relations on A is given by 2n2.

## How many relations are there between A and B?

A relation between A and B is a subset of the Cartesian product A × B. As A × B has 4 × 3 = 12 elements, it has 2 12 = 4096 subsets. So that is the number of relations.

**How many relations are there between m=3 and N=4?**

Here, we are starting from n=0 since the null set is also a relation. Here, m=3 and n=4. So, number of relations = 2 3 ∗ 4 = 2 12 = 4096. Thank you for reading this! : )

### How many (NxM) relations can be defined from a to B?

A subset of the Cartesian product (AxB)of two sets A, B is a relation from A to B . If there are n elements in the set A and m elements in the set B, then there will be (nxm) elements in AxB . Accordingly, there will be 2^ (nxm) subsets of AxB and therefore there can be defined 2^ (nxm) relations from A to B .

### How many distinct relations can be defined over a?

The total number of distinct relations that can be defined over A is Let A = {1, 2, 3}. The total number of distinct relations that can be defined over A is Was this answer helpful?