List of top Mathematics Questions on Permutations asked in KEAM

The number of arrangements of the letters of the word BANANA so that the arrangement starts and ends with the same letter, is

There are 3 boys and 4 girls in a group. The number of ways they can sit in a row so that between any two boys there is a girl and between any two girls there is a boy, is

Let $S$ be the set of all 3-digit numbers containing the digits 3, 5 and 7 without repetition. The sum of all numbers in $S$ is

If \(^n P_5 = 360360\), then \(^n C_5 = \)

The number of 3-digit numbers greater than 500, that can be formed using the digits 3, 4, 5, and 7, with repetition, is

Five digit number is formed using the digits 0, 1, 2, 3, 4 and 5 without repetitions. Number of five digit numbers which are divisible by 10 is ________.

The number of integers greater than 7000 using 2, 4, 6, 7, 8 without repetition is ________.

The value of \( {}^2P_1 + {}^3P_1 + \dots + {}^nP_1 \) is equal to:

The value of \( {}^2P_1 + {}^3P_1 + \dots + {}^nP_1 \) is equal to:

The value of \( {}^2P_1 + {}^3P_1 + \dots + {}^nP_1 \) is equal to: