fug
jason
T, U, V They are all mirrored letters.
The question is garbled, so it's not really solvable as asked. The question is supposed to be "Determine the next three letters in this sequence: D T N T L" The answer is "I T S"--the sequence is the first letters of the words in the question. But it doesn't really work if the wording is not exact.
A single number, such as 2481020, cannot define a sequence.
10
jj
tricky 1?? Not so tricky, they are the first letters of the months of the year, so the next letters would be, S, O, and N
jason
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abcde
z
The next three letters in this sequence follow by days of the week. S is sunday, m is monday t is tuesday, w is wednesday, so the next three letters are tfs because thursday friday saturday.
MAMJJASO are the initial letters of the months from March through October, so the next letter in the sequence is N for November.
This is a distorted version of a riddle. It has been so distorted that the answer does not make sense as it is. The original riddle was: Can you guess the next three letters in this sequence: CYGTNTL... The answer was ITS because the letters were the first letter of each word in the question. As it stands, the question no longer matches the letters so doesn't make sense, and the additions at the end "you t f" mean the original sequence has been lost completely.
c
T, U, V They are all mirrored letters.
A single number, such as 2481020, cannot define a sequence.