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Answer:
Total 1352 different arrangements can be formed.
Step-by-step explanation:
Total number of letters is 26 (a to z).
We need to find the arrangements of 3 letters
It is given that the first letter must be w or k and repetition of letters are allowed.
Since first letter can be w or k, therefore the possibilities for first letter is 2.
Repetition of letters are allowed and any letter can be formed in place of second and third letter.
So, the possibilities for second letter is 26 and possibilities for third letter is 26.
Total possibilities of arrangements of 3 letters is
Therefore total 1352 different arrangements can be formed.