If $^nP_6 = 336$ and $^nC_r = 56$, then n and r will be
Options
A$(3,2)$
B$(8,3)$
C$(7,4)$
Dnone of these
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Permutations and CombinationsMTP May 19Question 1637 of 159
All Questions Correct Answer
✅ Option c — $(7,4)$
All Options:
- A$(3,2)$
- B$(8,3)$
- C$(7,4)$
- Dnone of these
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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