The One Where Technothlon Answers

"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

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"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

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"Follow The Arrow"

(will be updated with the next set of Solutions. The discussion is still on.)

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