permutations and combinations
The letters of the word "sachin" are arranged in all possible ways as a 6 letter word and that words are made as dictionary. then what will be the positions of the word "sachin" in that dictionary . [for more problems and solutions contact my e-mail "sudokusubramanyam@gmail.com"]
The answer is 601.
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
1 solution
First we will have to arrange the digits in alphabetical order as follows : a , c , h , i , n , s
Then, the number of words that can be formed with...
a as first letter is = 5 ! = 1 2 0
c as first letter is = 5 ! = 1 2 0
h as first letter is = 5 ! = 1 2 0
i as first letter is = 5 ! = 1 2 0
n as first letter is = 5 ! = 1 2 0
The total now is 6 0 0
Then we will have s as first letter, which we want. After s , the first letter that we will get is a , which we want. After a , the first letter that we will get c , which we want. After c , the first letter that we will get is h , which we want. After h , the first letter that we will get i , which we want. After i , the first letter that we will get n , which we want.
Thus we can see that s a c h i n is the first word after 6 0 0 words. Thus it's position is 6 0 1
UPVEOTE it if you liked it