How many words, with or without meaning can be formed from the letters of the word ‘MONDAY’, assuming that no letter is repeated, if
all letters are used at a time
Given that we need to find the no. of words formed by all letters of MONDAY.
Now we need to arrange the 6 letters. Since every letter differs from other.
The arrangement is similar to that of arranging n people in n places which are n! ways to arrange. So, the total no. of words that can be formed is 6!.
Let us the total no. of words formed be N.
⇒ N = 6!
⇒ N = 360
∴ The no. of words that can be formed by 6 letters of MONDAY is 360.