Hi kobel51,
These types of "repeating sequence" questions tend to be easy to beat IF you draw a picture. We're given the repeating sequence of beads: RGWBY...RGWBY...
We're asked if a string starts with R and ends with W, then the total number of beads COULD be. The phrase "could be" is important because it means that there's more than one correct answer. We have to work until we find the correct answer that's listed OR we deduce the pattern.
Following the given rules, at the minimum, we'd have...
RGW = 3 beads
That answer's not there, so keep going with the pattern:
RGWBY
RGW = 8 beads
That answer's not there either, so keep going:
RGWBY
RGWBY
RGW = 13 beads
Now, that answer isn't there either, but we now KNOW the pattern. The total increases by 5 each time, and the correct answer will end in either a 3 or an 8.
Final Answer: E
GMAT assassins aren't born, they're made,
Rich
