Permutations an...

In the following question, groups of letters are  given. Find the odd one out.

Let the eleven letters, $$A, B, ....K$$ denote an artbitrary permutation of the integers $$(1,2,....11)$$, then $$(A-1)(B-2)(C-3)...(K-11)$$ is

The maximum number of points of intersection of $$7$$ staright lines and $$5$$ circles when $$3$$ straight lines are parallel and $$2$$ circles are concentric,is /are

Choose the odd one out . 

If $$x$$ and $$y$$ are the number of possibilities that $$A$$ can assume such that the unit digit of A and $$A^3$$ are same and the unit digit of $$A^2$$ and $$A^3$$ are same respectively ,then the value of $$x-y$$ is (where $$A$$ is a single digit number)

The number of permutation of the letters of the word $$HINDUSTAN$$ such that neither the pattern $$'HIN'$$ nor $$'DUS'$$ nor $$'TAN'$$ appears, are :

In how many ways atleast one horse and atleast one dog can be selected out of eight horses and seven dogs.

$$\begin{bmatrix} 12 & 47 & 21 \\ 10 & 52 & 4 \\ 64 & ? & 24 \end{bmatrix}$$ 

The number of ways in which the letters of the word $$"ARRANGE"$$ can be permuted such that $$R's$$ occur together is