Henry and Gretchen are going to play a game. Henry explains, "You and I will take turns saying numbers. The first person will say a number between 1 and 10. Then the other person will say a number that is at least 1 higher than that number, and at most 10 higher. We will keep going back and forth in this way until one of us says the number 50. That person wins. I'll start."
"Not so fast!" says Gretchen. "I want to win, so I will start."
What number should Gretchen say to start?
Check Braingle.com for the answer.
from Braingle's Teasers http://ift.tt/1fYO2jw
via 3d wooden brain teasers from craftypuzzles.com