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676 of them.
The maximum number of different three letter palindromes that can be made using any letter of the alphabet is 1 - that letter repeated 3 times. However, if you meant you can pick any letter for each letter of the palindrome, then: The first and last letters are the same and there is a choice of 26 letters for them; For each choice for the first (and last) letter, there is a choice of 26 letters for the second letter Making a total of 26 × 26 = 676 such three letter palindromes (where case of the letter does not matter).
Any two letters that are the same. cc is unit of measurement, ff is the symbol for fortissimo, pp is the symbol for pianissimo, and many others.
Tumut
Secret codes do not have a fixed amount of letters and numbers, they could be any length.
No, there are not any words in the English language using all of the letters kweeiisp.
Any palindromes that can be formed from the letters A,H,I,M,O,T,U,V,W,X,Y. such as TOT, WOW, MAM . . . .I'm sure there are bigger words there to be found.
No-all numbers
RacecAr Mom Pop Pup Dad Level Radar
Any, and every, number can be transformed into a palindrome.
There do not appear to be any English 9-letter words that use those letters in any combination or amount.
The asterisk or is used a wildcard to represent any amount of characters. It can be used to represent all or part of something. When it comes to files, *.* represents files of any name and any extension. You can also use it where you have part of the name you want, like if you want to find names that begin with particular letters like this where it takes anything that starts with A and has any amount of letters after it:A*