in how many ways can be the first four letters of your name be arranged to form a three letter word,

Question

(i)when the letter can be repeated
(ii)when the letter can not be repeated

Answer 1

E D W A

as a 3-letter "word" = 4x4x4 = 64 ways if the letters can be repeated
and 4x3x2 or 24 ways if the letters cannot be repeated.