s e m i t m w q t u f Y S
Sunday
E-5
Monday
I-9
Tuesday
M-13
Wednesday
Q-17
Thursday
U-21
Friday
Y-25
Saturday
The sequence can be split into two different sections, a progressing section with a continuous increase of 4, and a section with the first letter of the days of the week. Therefore the sequence is complete when Y (4 more than U) and S (for Saturday) are added.
You can't continue after that without repeating the alphabet and days.
N, T
ottffssen The question asked for the next 2 letters.... ottffse-n-t One, Two, Three, Four, Five, Six, Seven, Eight - Nine - Ten
MF, as in Mother F*****
T is next because the letters o, t, t, f, f, s, s, e, and n all stand for the beginning letters in the numbers one, two, three, four, five, six, seven, eight, and nine. To explain further: o=one, t=two, t=three, f=four, f=five, s=six, s=seven, e=eight, and n=nine. Therefore, T would be next because ten is after nine numerically.
The sequence "0ttffsse" represents the first letters of the numbers: zero (0), one (t), two (t), three (f), four (f), five (s), six (s), and seven (e). The next number in the sequence is eight, which starts with the letter "e." Therefore, the next letter in the sequence is "e."
E, n, t.
qr
The next letter is T - They're the initial letters of the numbers 1-10
The letters stand for One, Two, Three, Four, Five, Six, Seven, so the next three are ENT for Eight, Nine and Ten.
Coffee is a word. It contains double e and double f. Address contains two double letters.
The series alternates between letters in two patterns: the first letters (a, g) are separated by 6 letters, and the second letters (f, l) are separated by 6 letters as well. Continuing this pattern, after 'g' (the next letter would be 'm'), and after 'l' (the next letter would be 'r'). Thus, the next two letters in the series are "m" and "r", making the next sequence "m r".
The next letter in sequence a, l, b, e, m, f, i, n, j is the letter m. Why? The easiest way to figure this one out is to assign a number to each letter, beginning with 'A' =1. Therefore we have 1, 12, 2, 5, 13, 6, 9, 14, and 10. Next, look for a pattern in the series of numbers. Although not too obvious, start with the first letter 'A', then skip the next two letters 'L' and 'B'. 'E' is the next letter, which is 'A' plus 4. Then skip two letters 'M' and 'F' and add 4 to get 'I' ('E' + 4). This seems to be a good pattern. Continuing on the second letter in the sequence 'L', skip two letters. The next letter is 'M' which is 'L' plus 1. Then skip two letters and add 1, which is 'N'. So far we have a good pattern established. Finally, let's look at the third letter 'B'. Skip both letters 'E' and 'M' and we find the letter 'F', which is 'B' plus 4. Then add 4 to 'F', and we find the letter 'M' after jumping the two letters 'I' and 'N'. So the pattern is add 4 to the first letter, skip two letters, and you have the fourth letter. Then add 1 to the second letter, skip two letters, and you have the fifth. Add 4 to the third letter, and you have the sixth. The pattern then repeats itself. Since 4 was added to 'A', then added to 'E', then added to 'I', the next letter is 'M' ('I' + 4). Continuing on, the next two letters would be 'O' and 'N'. Hope this makes it a little clearer.