Any 2 from 26 = 26 x 25 = 650 if ab and ba are regarded as separate, otherwise 325.
The number is 26*25*24 = 15600.
Five
There are 5 letters: a c e f and h.If the letters can be repeated, then there are five possibilities for each space in the four-letter arrangement. The number of arrangements then is:5*5*5*5 = 54 = 625.
The word "BOX" consists of 3 distinct letters. The number of arrangements of these letters can be calculated using the factorial of the number of letters, which is 3! (3 factorial). Therefore, the total number of arrangements is 3! = 3 × 2 × 1 = 6. Thus, there are 6 possible arrangements of the letters in "BOX."
-5
There are 12 two letter arrangements of the letters in PARK.
120
The number of 5 letter arrangements of the letters in the word DANNY is the same as the number of permutations of 5 things taken 5 at a time, which is 120. However, since the letter N is repeated once, the number of distinct permutations is one half of that, or 60.
There is no formula: it is a process of swapping letters in a systematic manner.
It depends on the letters and also on the words that have been placed on the board.
-3
There are 172 different arrangements.