Question

If 20 points are marked on a circle, how many chords can be drawn?​

Answer 1

Answer:

There are 20 points on a circle.

To draw a chord, 2 points are required.

.. the number of chords that can be drawn through 20 points on the circle

-20C2 =

20!

2!18!

20 x 19 x 18! 2 x 1 x 18!

= 190.

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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