
Permutations and Combination
Permutation and Combination: Difference between Permutation and Combination, Permutation Meaning, Permutation and Combination Formula, Questions, Problems

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Online Aptitude Questions with Answers on Permutations and Combination
Q26. **How many four digit numbers can be formed using the digits {1, 3, 4, 5, 7, 9}, given that repetition of digits is not allowed?**
- 360
- 60
- 300
- 180
Solution : 360
Q27. **How many four digit even numbers can be formed using the digits {2, 3, 5, 1, 7, 9}**
- 256
- 360
- 125
- 250
- 216
Solution : 216
Q28. **In how many ways can six members be selected from a group of ten members?**
- ⁶C₄
- ¹⁰C₄
- ¹⁰C₅
- ¹⁰P₄
- ¹⁰P₅
Solution : ¹⁰C₄
Q29. **A bag contains nine yellow balls, three white balls and four red balls. In how many ways can two balls be drawn from the bag?**
- ⁹C₂
- ³C₂
- ¹⁶C₂
- ¹²C₂
- ¹⁴C₂
Solution : ¹⁶C₂
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Q30. **In how many ways can three consonants and two vowels be selected from the letters of the word "TRIANGLE"?**
- 25
- 13
- 40
- 20
- 30
Solution : 30
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