Question
Number of permutations that can be made using all the letters of the word MATRIX is
- 120
- 240
- 480
- 720
Hint:
Basically Permutation is an arrangement of objects in a particular way or order. While dealing with permutation one should concern about the selection as well as arrangement.
In Short, ordering is very much essential in permutations. In other words, the permutation is considered as an ordered combination.
The correct answer is: 720
The word MATRIX is a 6 letter word
Thus, number of permutations that can be made using all the letters of the word MATRIX is 6! = 720
Related Questions to study
The number of different signals that can be made by 5 flags from 8 flags of different colours is :
Each of the different arrangements which can be made by taking some or all of a number of things at a time is called permutation. The number of permutation without any repetition states that arranging n objects taken r at a time is equivalent to filling r places out of n things =n(n−1)(n−2)......(n−r−1) ways = 
Thus we can say that the permutation concerns both the selection and the arrangement of the selected things in all possible ways.
The number of different signals that can be made by 5 flags from 8 flags of different colours is :
Each of the different arrangements which can be made by taking some or all of a number of things at a time is called permutation. The number of permutation without any repetition states that arranging n objects taken r at a time is equivalent to filling r places out of n things =n(n−1)(n−2)......(n−r−1) ways =
Thus we can say that the permutation concerns both the selection and the arrangement of the selected things in all possible ways.
then A-B=
, then 
then K=
when divided by 
and 
are 7,3 then the remainder of 
is
then 
are
are
then 
are
are
then 
,
then B=
are 2,5 then the remainder of 
is
