Mathematical puzzles

Puzzles, situation puzzles and recreational mathematics.

situation puzzles and recreational mathematics. Neuron juice
 
 
 

Neuron juice.

The important thing is not to stop questioning. (Albert Einstein.)

  

Sent by Bernardo Escobosa.

15.- A traveler is captured by some cannibals and they tell him:

If you tell a lie we will kill you slowly and if you tell a truth we will kill you quickly.

What does he say not to be killed?