The number of 3-digit odd numbers can be formed using the digits 5,6,7,8,9. If repetition is allowed?
Options
A56
B75
C95
D45
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Permutations and CombinationsMTP Jun 23Question 1668 of 159
All Questions Correct Answer
✅ Option b — 75
All Options:
- A56
- B75
- C95
- D45
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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