kte :
The probability that k will be the first letter of your word is 1/26.
The probability that t will be the second letter of your word is 1/26.
The probability that e will be the third letter of your word is 1/26.
As a result, the probability that each of these letters will be chosen in that order is 1/26 * 1/26 * 1/26 = approximately .00006