Permutations and CombinationsMTP Dec 23Question 1740 of 176
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The maximum number of points of intersection of 10\displaystyle 10 circles will be:

Options

A2\displaystyle 2
B20\displaystyle 20
C90\displaystyle 90
D180\displaystyle 180
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Correct Answer

Option c90\displaystyle 90

All Options:

  • A2\displaystyle 2
  • B20\displaystyle 20
  • C90\displaystyle 90
  • D180\displaystyle 180

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 Syllabus

Exam 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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