Permutation Tes...

The greatest integer, which divides n! + 1, n ∈ N, n ≥ 3 is

A closet has 5 pairs of shoes. The number of ways in which 4 shoes can be chosen from it so that there will be no complete pair is

Number of ways of selecting n things out of 3n things of which n are of one kind and alike and n are alike of 2^nd kind and rest are unlike is

How many different 5 letter sequences can be made using the letters A,B,C,D with repetition such that the sequence does not include the word BAD?

The number of ways in which the sequence of a 8×8 chess board can be painted red or blue so that each 2×2 squares has two red and two blue squares is

Statement-1 : Number of permutations of "n" dissimilar things taken "n" at a time is ⁿp_n.

Statement-2 :  n(A) = n(B) = n then the total number of functions from A to B are n!