why would the letter I be the next letter in the sequence: C A R R
C
TD,r
It looks as if every third letter is an "r"; the remaining letters are in sequence.
There is very little information in the question to go on, but it looks like the next letter is R - an interval of five letters.
The sequence appears to represent the positions of letters in the alphabet: A=1, R=18, D=4. Following this pattern, the next letter is T, which is the 20th letter. Therefore, the next number in the sequence is 20.
A
Y
y
b
CRC CBO and COL
C
TD,r
The next letter in the sequence would be "A." This sequence alternates between the letters R and G, with the addition of the letter A after each occurrence of R. Therefore, following the pattern, the next letter after G would be A.
The missing letter is "a," forming the sequence "c, r, a, b," which spells "crab." This sequence follows an alphabetical pattern by skipping one letter between each.
B
It looks as if every third letter is an "r"; the remaining letters are in sequence.
CARRY