Daily Puzzles - Grey Matter is here - NO PJ's!!!

Safin

Ok this is simple now.

This is not mathematics

How is half of 12, 7?

(yes its true in base 12, but forget about base, this is not a base change problem

)

OT: Again 12 in base 12 is 14, half of which is 7. Anyway thats not the solution to the problem. Tell me some other way how its 7?

Agnel

Originally Posted by Safin

How terrible. Not even a single attempt.

Anyway, use the principle of base. Here is an explanation.
value of 15 is 15 because its base 10.
that is
(10^1)*1+(10^0)*5
(ten raised to 1 is 10 and ten raised to 0 is 1)

So in this case, whenever you see such kind of puzzles its usually a base change problem

So we have at base 18
converting to decimal
(18^1)*1+8 (as 8 remains as such) = 26
Half of that is 13.

Caveat: If someone would have solved this you could have said the answer as 21 which is also logically right as there is no distinguishing method to know if 13 is in decimal or base 18.

Cheatin

If you can change the base and prove crap, my proof is also right

Cut 8 you get either 0 or 3

Safin

Cheating. Changing the base is pure mathematical logic. Its the first thing to have thought about when i mentioned it's mathematics problem

Now don't give petty excuses