Infinite Quarters

#1

I wasnt able to understand the solution. What if there awere 0 tails in the 20 coins chosen?

#2

Hi Divyam, if there were 0 tails in the 20 coins chosen, then x = 0, and 20-x=20-0=20.
So there are 0 tails on the left side and 20 tails on the right side. Then if I flip the coins on the left side, then I get 20 tails. Now, I have 20 tails on both sides, and hence I win the puzzle.
If you still have further doubts, reply to this thread.

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