How many chords can be drawn through 21 points on a circle?

Explanation

To find the number of chords that can be drawn through 21 points on a circle, we can follow these steps:

### Step 1: Understand the concept of a chord
A chord is defined as a line segment joining two points on a circle. Therefore, to form a chord, we need to select 2 points from the given points on the circle.

### Step 2: Determine the number of points
In this case, we have a total of 21 points on the circle.

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