## September 2017 Fiendish Function

The Fiendish Function posed during September 2017 had the following sample guesses and replies:

- 1
- 7
- 2
- 41
- 3
- 12
- 4
- 82
- 5
- 53
- 10
- 7

The rule was: "Multiply the number by seven, then reverse the order of the digits".

Suppose the guess was 12:

- Multiply by seven, giving 84.
- Reverse the order of the digits, giving 48.

So the result is 48.

## Earlier answers

Here are the answers to the Fiendish Functions posted in earlier months: