Out of 18 points in a plane, no three are in the same straight line except 5 points which are collinear. How many straight lines can be formed by joining them?

143

No worries! We‘ve got your back. Try BYJU‘S free classes today!

145

No worries! We‘ve got your back. Try BYJU‘S free classes today!

144

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

288

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C
144

18 points are given out of which 5 are collinear.

The number of straight lines $18_{C_{2}} - 5_{C_{2}} + 1 = 144$

Suggest Corrections

Similar questions

Out of 18 points in a plane, no three are in the same straight line except five points which are collinear. How many (i) straight lines (ii) triangles can be formed by joining them ?

Q. Out of 18 points in a plane, no three are in the same straight line except five points which are collinear. How many
(i) straight lines
fill triangles can be formed by joining them?

Q. Out of 18 point in a plane no three are in the same straight line except five points which are collinear. how many triangles can be formed by joining them ?

Q. How many straight lines can be formed from

11

points in a plane out of which no three points are collinear?

Q. Out of 18 points in a plane, no three are in the same line except five points which are collinear. Find the number of lines that can be formed joining the point.

Join BYJU'S Learning Program

Out of 18 points in a plane, no three are in the same straight line except 5 points which are collinear. How many straight lines can be formed by joining them?

The correct option is C 144 18 points are given out of which 5 are collinear. The number of straight lines 18C2−5C2+1=144

The correct option is C
144

18 points are given out of which 5 are collinear.

The number of straight lines $18_{C_{2}} - 5_{C_{2}} + 1 = 144$