Pinned Questions of logic/mathematics/lateral thinking

In one of the books I have at home, the end is in the first half and the title in the second half. The prologue is written after the conclusion but the index is before the introduction.

What book is?.

Challenge: how can you count up to number 485 with just one hand?.

Gift a candy to whoever solves it.

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Rules:

You are separated a certain distance from a colleague and you want to transmit a number (0 to 485) to him with a gesture of a single hand.

It is not good to make figures or shapes with your fingers, nor is it allowed to make sequences with your fingers. The number should be clear with a single gesture of a single hand.

Well eiO !, ... that's where the shots go.

I put a video with the solution to my problem, it is in Spanish but the technique is easily understood.

II, I, III
F X K
JHUMXMPCBUFPHIKLDNWMCUEDPCTLSNHYSZOUKFFEFHBMDXIZAFCXXPBGJUIJBNTJEBZGRKVYAYOGGSNVPDTVLVBHHXFQHOXEVNRXTEKQRZJVMCQWQ

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Note on the following video: the English of Bletchley Park, with Alan Turing at the head, were not the first to break the code of the machine Enigma, was a Polish mathematician named Marian Rejewski.



Simulator of the Enigma machine:

enigmaco.de/enigma/enigma_es.html

Could you tell me where this doll comes from?
What is the origin of it?.

I suppose GB = UK (United Kingdom).

Of course!, ... but you have not explained why.

We are going to relax thinking about serious things, that brawling to an add on of a game is not ...

NASA is organizing a trip to the planet Venus and asking for volunteers to go. It will recover € 1,000,000 for those who travel to Venus and stay one day on the planet, and € 10,000,000 for anyone staying one year.

What would you prefer if you were chosen to go?.