A Problem by Swapnil Das
Probability
Level
2
Find the number of quadrilaterals that can be formed by joining the vertices of a septagon.
The answer is 35.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
Out of seven points you need to select 4 points.
So, answer is 7C4 = 35.