"The Drowning City"
Let’s
start with filling up the grid. Let for our purpose, the cell in Row-x and
Column-y be denoted as: (x, y).
· Try to fill column E.
To satisfy 12 at the top we must not fill (1,E) with 9,8,7,6 (Rule-5), and also
not with 2,3,4,5,6,7 (Rule-3). So it has to be 1. So should be (4,E), (3,B),
and (6,B). Now to satisfy 12 at the top of col-E, (3,E), (6,F), (1,B), and
(4,B) must be 8.
· Since we start at the
top of column F, people from (2,E) will be rescued before we reach the right of
Row-2. Hence, (2,F), (2,C), (5,F), (5,C) are 5.
· Let’s see (3,F), it
can’t be filled with 1(check (2,C)),3,4,5,6,7,8, or, 9 (Rule-3) therefore it
has to be 2; so should be (6,F), (1,C), (4,C).
· Similarly, (2,D) can’t
be filled with 1,2,3,4,5,6,7,8 (Rule-3), and it’s 9 along with (2,A), (5,A),
and (5,D).
· Only possible choice
for (3,C) and hence (3,D), (3,A), (6,A) and (6,D) is 4.
The numbers
outside the grid can be filled now.
(Remember: You can’t save one’s who have already
been saved. Be cautious while answering the questions. Avoid over-counting.)
· Brown and Green box
represents the ones who couldn’t be saved in the original situation.
· Green box represents
the ones who could have been saved if the diagonal light was allowed.
Question-1: option-1) 4
Question-2: option-3) 25
Question-3: option-1) 9
"Jumbled"
(A few
clarifications:
- In Q2, ‘None of these’ means ‘None of these’ and nothing
else, unlike what is being interpreted in the discussion.
- In Q4 we asked for option which is where the attentiveness
is being tested as Q-2 doesn’t contain 3 and 4 and Q-4 doesn’t contain 0 in any
of the options.)
Let’s start by rejecting the inappropriate options.
- In Q1, reject opt-3 (Rule-2).
- In Q2, reject opt-4 (Rule-1).
- In Q3, reject opt-4 (Rule-2).
- In Q4, reject opt-1 (read Q4).
Interestingly, you can solve the Q2 before any other Ques,
but when all Ques are taken in account, you must chose opt-2 for Q3 else it
will create a contradiction. And this is where the actual thinking was
involved, and the approach, “Start your thinking process from Q3, and hence
it’s ans is opt-2” is not strong enough to support the answer to Q3.
Based on the above step, reject opt-4 in Q1.
In Q2, reject opt-2 i.e. 0 as then ans to Q4 would be opt-3,
a contradiction. Also reject opt-1 as that would mean ans to Q4 is opt-4 and
the 2 ques to have opt-3 as their ans must be Q1 & Q3-a contradiction to
above answers.
=>Ans to Q2 is opt-3. => Ans to Q-4 is opt-2.
Now Q1 is left to be answered at the end. => Ans to Q1 is
opt-1.
Question-1: option-1)
1
Question-2: option-3)
1
Question-3: option-2)
3
Question-4: option-2)
3
"Follow The Arrow"
(will be updated with the next set of Solutions. The discussion is still on.)