Quantitative Aptitude Ques 15
Question: The total number of triangles that can be formed from 12 points out of which 4 points are collinear?
Options:
A) 220
B) 224
C) 216
D) 210
Show Answer
Answer:
Correct Answer: C
Solution:
- Total number of triangles which can be formed $ ={}^{12}C _3-{}^{4}C _3=\frac{12!}{3!9!}-\frac{4!}{3!4!} $ $ =220-4=216 $
BETA
