Before starting the game answer the following questions:

Q.1

How many coins do you get every of the 20 rounds ?

20
10
5
other / not clear from instructions

Q.2

If you put 5 in your personal box and 5 in the black box, what is the lowest payment you know you are guaranteed from this round ?

0
At least 5
10
Other / not clear from instructions

Q.3

If you put 5 in your personal box and 5 in the black box, and all others do the same, how much are you guaranteed from this round ?

0
At least 5
20
Other / not clear from instructions