Math Is Fun Forum

Nasir Hassan

Member

Registered: 2020-04-11

Posts: 6

Sides reversed Is Puzzle

Hi there.  I see there are 3 solutions mentioned (in addition to the 2 shown).  However, I actually find 28 solutions to the problem. Am I missing something?

Nasir

12 * 42
12 * 63
12 * 84
13 * 62
13 * 93
14 * 82
21 * 24
21 * 36
21 * 48
23 * 64
23 * 96
24 * 63
24 * 84
26 * 31
26 * 93
28 * 41
31 * 39
32 * 46
32 * 69
34 * 86
36 * 42
36 * 84
39 * 62
42 * 48
43 * 68
46 * 96
48 * 63
64 * 69

Bob

Administrator

Registered: 2010-06-20

Posts: 10,621

Re: Sides reversed Is Puzzle

hi Nasir,

I have noticed you are having fun trying the MIF puzzles.  That's great!

If you want to comment on a puzzle, it would be helpful if you provided a link to the puzzle so it can be found easily.  At the moment I'm not following which one you are referring to.

I've noticed that the site maker always gives a solution, but does not claim it's the only one.  Recently I tried a puzzle and found 8 more solutions on top of the one given.  So you may well have managed the same.

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

phrontister

Real Member

From: The Land of Tomorrow

Registered: 2009-07-12

Posts: 4,877

Re: Sides reversed Is Puzzle

Hi Nasir;

I got exactly the same as you did (including the two given questions), and, like you, didn't include numbers with repeated digits (in the spirit of the puzzle).

I initially considered omitting questions whose incorrect copy was also one of the original questions - which would reduce the number of questions (including the two given questions) to 14 - but decided against that because Hungry Horace wouldn't have noticed the 'repeats' as he hadn't recorded the originals.

Here's a link to the puzzle: Sides Reversed Is Puzzle

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