Computer Science, asked by siva1702, 11 months ago

If there are 7 distinct points on a plane, what is the maximum number of straight lines joining these points?

Answers

Answered by sonam4246

6

15 maximum no. of straight lines can be formed

Answered by stefangonzalez246

6

21 straight lines can be drawn by joining 7 distinct points.

Explanation:

Two points can make a straight line. We have 7 distinct points on a plane. The direction of the straight line is not mentioned here.

Let us find how many straight lines can be made by joining 7 distinct points.

The formula for combination of choosing 2 points from 7 distinct points,

7C2= 7!/(7-2)!2!

7! =7*6*5*4*3*2*1

7! = 5040

2! = 2*1

= 2

7C2 = 5040/2

= 21

So 21 straight lines can be drawn from 7 distinct points.

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