Issue 3, 2020 | OFF AIR

Written by: Helios
Back to insights

Posted under: Articles

Concealed country

Find the covert country in the paragraph below!

Efficiency is the word of the moment among airlines, as they work to reduce their fixed costs and become leaner and more flexible going forward. But it's too early to talk about COVID benefits – these still remain hidden. Marked progress has been made by airlines in accelerating digitalisation, adopting biometrics and other technologies. But this alone will not spare them from further industry consolidation.

The answer will be published in the next edition of ON AIR. Please send your solutions to [email protected]. All entries must be received by 31 January 2021. The first correct answer drawn at random after this date will win a pair of Helios wireless headphones. Good luck!

And the winner is…

The answer to the puzzle "The new handshake" is: Sebastian tapped four elbows.

See the full answer:

First, we need to figure out which nine answers Anne heard from the other nine people in the room. Since the two people per couple already know each other, at most, any one person could have tapped elbows with eight other people (since they tapped elbows only with people they haven't met).

Thus, since the nine answers are distinct from one another, Anne must have heard the answers: 0, 1, 2, 3, 4, 5, 6, 7, 8.

Now, how can we possibly figure out which is Sebastian's answer?

Let's start by calling the person who tapped eight elbows Person 8. It must be the case that Person 8 tapped everyone's elbow except for Person 8's own spouse (because they already know their spouse). Thus, everyone other than Person 8's spouse tapped at least one elbow. Therefore, Person 8's spouse must be the person who tapped zero elbows! So we now know Person 8 must be married to Person 0.

Now let's consider Person 7. We know they didn't tap Person 0's elbow because, well, Person 0 didn't tap any elbows. This means since Person 0 and Person 7's spouse are out, Person 7 must have tapped elbows with all the seven other people.

Now, as before, this means those seven other people tapped elbows with at least two people (Person 8 and Person 7), which means the person who tapped elbows with only one person must be Person 7's spouse. So we conclude Person 7 must be married to Person 1.

We can use similar logic to conclude Person 6 must be partnered with Person 2, and that Person 5 must be with Person 3. Finally, we get to the last remaining couple: One of them is Person 4, and the other has tapped elbows with Person 8, Person 7, Person 6, and Person 5—or, in other words, also four people. Thus, Person 4's spouse is another Person 4.

Since Anne heard nine different answers, and didn't hear two people answer that they had both tapped four elbows, it must be the case that Anne herself tapped four elbows. Furthermore, it also must be the case that Sebastian, her husband, is Person 4.

Thus, we have our answer: Sebastian tapped four elbows.

Congratulations to Job Bruggen of LVNL, who sent the correct answer and came first in the draw.

Call us to discuss your next project: +44 1252 451 651

Contact us