I understand why E is not correct, but I am not not certain why the answer could not be answers A-D? What are the possible cruise solutions?

A walk-thru of question 3.

Update your App to the latest version to view this solution.

(The update is free.)

Please review us on iTunes if you found this solution helpful.

Rule four says G in the week preceding any voyages to J. Doesn't that mean any week before J?

Shane,

Rule 4:
"Guadeloupe will be its destination in the week preceding ANY voyage it makes to Jamaica."
(Caps added for emphasis.)

This means that *whenever* you have J, you will have the two-character block [G, J].

So you'll never have J alone--it'll always be preceded by G.
NOTE: G *can* appear alone without J.

I don't see how it can be D. If week 4 is an M that would mean that the sequence would be 1-m 2-g 3-j 4-m 5-t 6- Nothing 7-t. Nothing would work for week six because you can only have 2 weeks at m and if you use g or j there would have to be two spots.

Josh,

"Freedom will make exactly two voyages to Martinique, and at least one voyage to Guadeloupe will occur in some week between those two voyages."
M < G < M

"Guadeloupe will be its destination in the week preceding any voyage it makes to Jamaica."
M < G < J < M

"Freedom makes a voyage to Trinidad in week 5"
M < G < J < M < T

"Trinidad will be its destination in week 7."
M < G < J < M < T < ? < T

"No destination will be scheduled for consecutive weeks." -> So ? is not T
"Guadeloupe will be its destination in the week preceding any voyage it makes to Jamaica." -> So ? can't be J
""Freedom will make exactly two voyages to Martinique" -> So ? can't be M

So G it is :)
M < G < J < M < T < G < T

That make D, going to M in the fourth week the correct answer.

Niels