RE: Puzzle Contest #4 - First to get all the correct answers wins 10 SBD, all attempts will receive an upvote.

[cheetah]

Hi! I am a robot. I just upvoted you! Readers might be interested in similar content by the same author:
https://steemit.com/contest/@spectrumecons/spectrum-economics-puzzle-contest-2-winner-gets-half-the-total-payout-of-this-post