+--------------+
| 2 6 5 7 | RR |
+--------------+
| 4 2 6 8 | #  |
+--------------+
| 0 4 1 5 | R  |
+---------------
| 1 7 4 9 | BB |
+---------------

Each of the rows in the table given above indicates an attempt to find out the secret number. Each try has, in the column to the right, the letters R and B and the hashtag(#) symbol.

Each R indicates that this digit has one digit common with the secret number, but in a different position.

Each B indicates that this number has one digit common with the secret number in the same position.

A single hash (#) indicates that none of the digits are correct.

Determine the secret number.

*** The four digits of the secret number are different.

(In reply to re: Solution by Thomas Sanders)

Posted by K Sengupta on 2022-02-12 17:41:34