Moving on to question 13. If freedom make a voyage to
Trinidad in week 5 which one of the
following could be true?
Alright, so let's draw out a quick hypothetical. It
tells us that we have Trinidad in week 5
and we already know we have Trinidad in
week seven. So, now it's important to know with 5
being Trinidad we've lost the option of 4
and 5, 5 and 6, for our Guadalupe Jamaica block which
we know we're gonna have at least one of.
So, now our only possibilities here are
1 & 2, and 2 & 3 which obviously means
we're only going to be going to Jamaica once
because we don't have room for two of
them because again we know that Jamaica
cannot be fouth and also can't be first. So,
again either having Guadalupe Jamaica 1
and 2 or having Guadalupe and Jamaica
2 and 3. Now the only thing remaining here is
box. Again we know we have too Martiniques
and there must be at least one Guadalupe
in between them. So we know in this
scenario this is the only possibility. In
the top scenario now we have to place
our two Martiniques and there must be
at least one Guadalupe in between. Well
we already have a Guadalupe in 2 so regardless
of where we place our Martiniques
that condition is going to be
satisfied. Obviously we can't go 4 & 6 though. So you
notice it's either going to be 1 &
4 or its gonna be 1 & 6 which
means no matter what we're going to have
a Martinique appear first.
Now we can have either Martinique show up
4th or 6th and the other variable can only
be Guadalupe because we can't have Trinidad
back-to-back so we can't have Trinidad 4th or 6th.
We can't have have Jamaica show up again because
of our fourth condition and there's no room
for Guadalupe and we already know that
Martinique shows up exactly twice. So, when
we place that Martinique the other is gonna
have to be Guadalupe. So, again
we're gonna have these reverse dual options of
Martinique and Guadeloupe. Alright, so now
turning our attention to the answer
choices. Here again looking for what
could be true.
(A) Freedom make a voyage to Trinidad in
week 1 and that is not possible. It's
either going to be Martinique or Guadeloupe.
(B) Freedom make a voyage to Martinique in week
2. Again inpossible. It's either going to be Guadeloupe or Jamaica. (C) Freedom makes
a voyage to Guadalupe in week 3. Again,
not possible. Either Jamaica or Martinique which brings us to
(D) Freedom makes a voyage to Martinique in week 4.
And you noticed in our top scenario we could
have a voyage to Martinique in week
4. So, (D) here would be the correct
answer. And again just checking (E) to show you
Freedom makes the voyage to Jamaica in
week 6 and again you notice it's either
going to be Guadaloupe or Martinique so (E)
cannot be true in (E) is out.