Question

topic:combination

how many triangles are determined by points,no three of which lie on the same straight line

Answer 1

how many points are there

Answer 2

i didnt see here on my homework..how many points are there

Answer 3

a trick question

Answer 4

let there n points, so that the triangle in condition no three of which lie on the same straight line, so the sum of triangle will be = nC3

Answer 5

maybe i pass for that question

Answer 6

yeah, i think

Answer 7

hahaha