b
S
Traffic light sequence. Red, Red/Amber, Green, Amber, Red.
The sequence is neither arithmetic nor geometric.
C = 2*pi*r 8 = 2*pi*r 4 = pi*r r = 4/pi
why would the letter I be the next letter in the sequence: C A R R
A
y
b
CRC CBO and COL
C
TD,r
B
It looks as if every third letter is an "r"; the remaining letters are in sequence.
CARRY
y
y