There are 20 points in a plane area. How many triangles can be formed by these points if 5 points are collinear?
Options
A550
B560
C1130
D1140
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Permutations and CombinationsPYQ Dec 22Question 1698 of 159
All Questions Correct Answer
✅ Option c — 1130
All Options:
- A550
- B560
- C1130
- D1140
About This Chapter: Permutations and Combinations
Paper
Paper 3: Quantitative Aptitude
Weightage
4-6 Marks
Key Topics
Factorials, Permutations, Combinations
This chapter deals with the fundamental principles of counting. It covers factorials, circular permutations, restricted permutations, combinations, and the differences between selecting items versus arranging them.
View Official ICAI SyllabusExam Strategy Tip
The most common mistake is confusing 'P' (Arrangement) with 'C' (Selection). If order matters (like opening a lock), use P. If order doesn't matter (like choosing a team), use C.
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