You Ask! We Count!

Number of three letter combinations

How many three letter combinations are there?

26 × 26 × 26 = 17,576

The total number of possible three-letter abbreviations using the 26 letters of the alphabet from A to Z (AAA, AAB, AAC, AAD, AAE, AAF, AAG, AAH, AAI, AAJ, AAK, AAL, AAM, AAN   … to ZZY, ZZZ) is 26 × 26 × 26 = 17,576. Not too many people know that another 26 × 26 × 10 = 6760 can be produced if the third element is allowed to be a digit 0-9, giving a total of 24,336. The three letter combination is also called three-letter acronym, three-letter abbreviation or TLA.

This fact is verified on : September 17, 2013.





Leave a Response