Permutation & Combination
Free Math Problems, Questions, Answers, Shortcuts listed topicwise
nCr, nPr, factorials, sampling with replacement, sampling without replacement, sampling with ordering and sampling without ordering. Questions on numbers, tossing of coins, rolling of dice, picking a card from a pack of cards and questions on combinations and permutations.
List of Sample Problems
- Question 1: a, b, c are three positive integers (not necessarily distinct) that add up to give 11. How many such combinations of a, b and c exist?
- 150
- 55
- 120
- 45
- Question 2: The number of divisors of the type 4n + 2 of the number 2520 is?
- 12
- 13
- 24
- 16
- Question 3: A punter offers three choices to you
- Roll a fair pair of dice, you win if the number if greater than 8
- Roll a fair pair of dice, you lose if the number is greater than 8. If the number is less than 8, then he tosses a coin, you win if the coin turns "heads"
- Punter tosses two coins, you win if both return "heads". Which of these three games would you choose
- A
- B
- C
- B or C
- Question 4: Using the digits 2, 3, and 4 how many 3-digit numbers can be formed that are divisible by 3.The digits can be repeated.
- 9
- 8
- 7
- 10
- Question 5: The number of arrangements of the word SLEEPLESSNESS where no 2 S's appear adjacent to each other is
AIEEE Math Problems, Practice Questions and Answers : Listed Topicwise
1 month intensive classes for AIEEE @ Chennai starts in March 2011. At Anna Nagar, Mylapore and Tambaram. 
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