There are 12 points in a plane, then how many triangles can be drawn?
Answers
Answered by
1
Answer:
(i) No. of lines =
12
C
2
-
5
C
2
+ 1 = 66 - 10 + 1 = 57.
(ii) No. of Δ
s
=
12
C
3
-
5
C
3
= 220 - 10 = 210.
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