How many numbers are between 2 and 21?

There are 18 numbers between 2 and 21.

What does inclusive mean?

Inclusive means both endpoints 2 and 21 are included.

What does exclusive mean?

Exclusive means neither 2 nor 21 is included in the list.

Numbers Between 2 and 21

TOTAL NUMBERS: 18

The numbers between 2 and 21, excluding both endpoints, are listed below. Useful for math problems, ranges, and number sets.

What Are the Numbers Between 2 and 21?

To find the numbers between 2 and 21 excluding the bounds, we list all whole numbers greater than 2 and less than 21. This is a common operation in mathematics, programming, and data filtering.

How to Calculate the Count of Numbers Between

The formula to calculate how many whole numbers are between two integers is:

Inclusive: abs(B - A) + 1
Exclusive: abs(B - A) - 1

So for 2 and 21 in exclusive mode, the count is: 18.

List of Numbers

#	Number
1	3
2	4
3	5
4	6
5	7
6	8
7	9
8	10
9	11
10	12
11	13
12	14
13	15
14	16
15	17
16	18
17	19
18	20

Copy Number List

Space-separated numbers:

3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Comma-separated numbers:

3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20

FAQ

How many numbers are between 2 and 21?

There are 18 numbers between 2 and 21 when counted exclusively.
What does inclusive mean?

Inclusive means both 2 and 21 are part of the result.
What does exclusive mean?

Exclusive means neither 2 nor 21 is included in the result list.

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What Is This Tool Used For?

This number range finder is useful in many cases such as:

Programming loops and ranges
Teaching number sense in classrooms
Generating test datasets or practice exercises
Solving math problems involving intervals