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 Covert Quantity III (Posted on 2013-09-23)
```+---------+-------+
| 6 2 5 3 | R     |
+---------+-------+
| 8 1 4 7 | R R   |
+---------+-------+
| 2 5 7 1 | B     |
+---------+-------+
| 3 6 0 9 | R R   |
+---------+-------+
| 9 6 8 7 | B B   |
+---------+-------+```
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.

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

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

Determine the secret number.

 Submitted by K Sengupta Rating: 2.0000 (1 votes) Solution: (Hide) The required secret number is 9381. For an explanation, refer to Salil's methodology in the comments.

 Subject Author Date Solution Salil 2013-09-26 23:43:04 I come up with jduval 2013-09-24 01:03:55

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