CBSE Class 11-science Answered
THERE ARE 10 POINTS IN A PLANE AND 6 POINTS ARE ON STRAIGHT LINE FIND
1. HOW MANY STRAIGHT LINE CAN BE FORMED?
2. HOW MANY TRIANGLES CAN BE FORMED?
Asked by SHRUTI GUPTA | 19 Oct, 2013, 03:14: PM
Expert Answer
(1)
Hence, total lines = 10C2 - 6C2 + 1
(2) We know that any triangle can be obtained by joining any three points not on the same straight line.
So, number of triangles = 10C3 - 6C3
Answered by | 19 Oct, 2013, 07:17: PM
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