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 Tanya's puzzle (Posted on 2016-05-10)
On April 16, 2015, Tanya Khovanova wrote in her blog:

<begin>
Here is my new logic puzzle.
I thought of a positive integer that is below 100 and is divisible by 7. In addition to the public knowledge above, I privately tell the units digit of my number to Alice and the tens digit to Bob. Alice and Bob are very logical people, but their conversation might seem strange:

Alice: You do not know Tanya’s number.
Bob: I know Tanya’s number.

What is my number?
<end>

 Subject Author Date Solution hoodat 2016-06-28 04:43:30 ambiguity armando 2016-05-12 04:28:06 re(5): could be Dej Mar 2016-05-11 18:29:18 re(4): could be Charlie 2016-05-11 07:32:24 re(3): could be Ady TZIDON 2016-05-10 21:51:33 re(2): could be armando 2016-05-10 16:23:45 re: could be Ady TZIDON 2016-05-10 14:40:02 could be Charlie 2016-05-10 14:00:22 re: Not so masked Ady TZIDON 2016-05-10 13:39:37 Not so masked armando 2016-05-10 12:53:37

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