110 triangles can be formed by joning 10 points as vertices in wh… - Vidyadip

MCQ

$110$ triangles can be formed by joning $10$ points as vertices in which $n$ points are collinear. Then the value of $n$ is

✓
$5$
B
$6$
C
$3$
D
$4$

✓

Answer

Correct option: A.

$5$

a
$^{10}C_3 - ^nC_3 = 110$
$n = 5$

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