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        riddles >> easy >> Lines
        
(Message started by: alien2 on May 4^th, 2015, 7:51am)

Title: Lines
Post by alien2 on May 4^th, 2015, 7:51am

(You are given an A4 paper with the following riddle.)

All you're allowed to do is to draw maximum two straight lines. By using a pencil and a ruler, your task is to run a line through all the numbers.

2 9 7 3 6 9 5
7 2 4 8 4 5 9
4 7 3 9 8 3 1

Title: Re: Lines
Post by SMQ on May 4^th, 2015, 9:31am

Is the [hide]"draw" vs "run"[/hide] wording significant? I.e. can I [hide]fold the paper in half and crease it to "run" a third line[/hide]?

Title: Re: Lines
Post by towr on May 4^th, 2015, 12:16pm

[hide]Can I draw a line that's not straight[/hide]?

[hide]Can I curve space[/hide]? [hide]Or y'know, just bend the paper into a cylinder.[/hide]

Title: Re: Lines
Post by alien2 on May 4^th, 2015, 3:09pm

Not allowed. I've modified the riddle in order to exclude all of the ideas above.

Title: Re: Lines
Post by pex on May 4^th, 2015, 3:43pm

[hide]Every instance of every number, or just all the different numbers[/hide]? In the latter case, [hide]we don't need the middle row[/hide].

Title: Re: Lines
Post by alien2 on May 5^th, 2015, 9:11am

on 05/04/15 at 15:43:06, pex wrote:

[hide]Every instance of every number, or just all the different numbers[/hide]? In the latter case, [hide]we don't need the middle row[/hide].

This is the intended answer.

I think that it is enough to [hide]draw one line[/hide] for an alternative answer.

Title: Re: Lines
Post by pex on May 5^th, 2015, 5:59pm

on 05/05/15 at 09:11:18, alien2 wrote:

I think that it is enough to [hide]draw one line[/hide] for an alternative answer.

I hope that would not involve [hide]drawing a line through the words "all the numbers"[/hide]...?

Title: Re: Lines
Post by alien2 on May 6^th, 2015, 3:17am

Err... it does. Just disregard this silly answer.