26*25 = 650
There are 26*25*24*23*22 = 7,893,600 sets of initials.
The solution is count the number of letters in the word and divide by the number of permutations of the repeated letters; 7!/3! = 840.
There are 8 letters with no repeated letters and you are working out the number of combintaions of all 8 letters with respect to order so the answer is 8P8=8!=40320
Any three letters, in any order, including repeated letters gives 263 combinations each of which could have one of 9 digits so 26 x 26 x 26 x 9 ie 158184 different plates.
2600
There are 26*25*24*23*22 = 7,893,600 sets of initials.
WE call the different initials after our names letters they show people what examinations and qualifications you have
Ther are 6 letters in the word letter two of which are repeated which gives a total of four different letters.
uncopyrightable (15 letters).
The letters STAINILI spell the word "initials."
26 x 25 x 24 = 15,600
It is approx 54%.
3490 to 1
arv
They are typed in lowercase letters!
chocolate = 9 letters, where o and c are repeated 2 times. There are 9!/(2!2!) = 90,720 ways.
The word "pair" meets this criteria. It is spelled differently from the word "pear," with no repeated letters, but they sound the same.