Riddles and solution

[lyorn]

I posted some riddles at a blog, and have been asked for spoiler-less answers. So here's the riddles, the way I posted them. The answers are in the comments.


Not arithmetic at all:

20 1 18 4
M N B V ...
10 6 13 1 ...
1783 1848 1871 1947 ... (Only one number follows).

Double number sequence:

4 19 7 15 11 10 ...

Arithmetics on a hillside:

1 1 3 4 ...
0 2 2 2 ...
1 2 1 4 ...

Comments

Re: Solutions

[(Anonymous)]

X (aka alexela)

Crazy insight problems. I could tell your french republic ones were years, and I guessed they were years for a series of events, but I didn't know what event. i guessed some countries wars. I wasn't so far off I suppose, especially given I was lacking the cultural knowledge of the years of the french republics.

I failed at your other ones because I didn't realize that you would alternate between two patterns in the same problem. Without that clue I could only establish that they seemed not to be following any one pattern. I intuited from there that the potential problem space I would have to shift through by trial and error would be so enormous I could stare at the problem for hours and never hit on the right answer, so I just gave up :)

Re: Solutions

[lyorn.livejournal.com]

I have actually encountered the alternated patterns in online intelligence tests, and that was a case of, understand one, solve three, gain five points in the results. The two-dimensional pattern was something I came up with, haven't yet seen it anywhere else.

I wanted something with historical events, because that's a typical quiz (as opposed to puzzle) question.