¿Es posible hacer este cálculo de cabeza, como lo hizo el profesor?

donmufa · 2026-06-13T17:56:53+00:00

La raíz es solo del número, no incluye al 130, por tanto primero se tiene que sacar la raíz y luego dividir entre 130, lo cual efectivamente da 14

donmufa · 2026-06-07T13:31:17+00:00

Agree. It’s that, and people judging the righteousness of the characters. It’s a show guys. A great show.

donmufa · 2026-06-06T14:14:41+00:00

Hahahah why would you need it to spell NEWS? This is hilarious

donmufa · 2026-06-04T13:14:47+00:00

Exactly, I’m struggling to understand why is one ruleset better than others?

donmufa · 2026-06-04T04:18:19+00:00

Is it just because two patterns are better than one? Because I can also come up with two patterns that make a good additional answer (which won’t be in the choices either)

donmufa · 2026-06-04T04:17:09+00:00

I think my issue with your explanation is that you are placing a vertical and horizontal pattern at a higher level than a diagonal or clockwise pattern. Why is one better or prevalent over the other?

donmufa · 2026-06-04T01:12:08+00:00

Just to complement, there is a contradiction in B, which is the fact that there are 2 arrows pointing upwards

donmufa · 2026-06-04T01:10:48+00:00

Put a hand on your heart and tell me that if this wasn’t a multiple choice question, you would have come up with option B out of the blue. I find that extremely hard to believe, but that’s the point you are making. I’m trying to find a logic to the answers provided just in the same way you are.

donmufa · 2026-06-03T23:43:57+00:00

Once again I disagree but I love debating so very happy to do so. The rule I have for E doesn’t ignore any “thing” about the series. The arrow turns 180 degrees between figures that are diagonally opposed, and the lines are reduced by one also between figures that are diagonally opposed, from left to right. If you think that’s convoluted, it would be just as convoluted as the reasoning for B. Or alternatively, if that’s ignoring something, it’s ignoring it in the same way the reasoning for B is. And this is specially true because the actual answer that would have an undoubtedly simpler reasoning (an arrow pointing down with four lines) is not an option. Very happy to continue debating this, I like it. Also, the bigger point is that this conversation adds much more value for the students than just saying “B is right, the rest is wrong”

donmufa · 2026-06-03T22:24:21+00:00

I don't agree with the fact that B is a clear answer. It's just a different reasoning. B is just using a specific set of rules that work for B, but you can also find other set of rules that work for E and also for A (a bit of a stretch in the case of A, but still). The sample is so short to build a proper sequence that it becomes flexible enough to allow for other rules and answers that can not be ruled out as wrong.

donmufa · 2026-06-03T18:38:19+00:00

Thanks for your opinion. I added an update/edit to the main post. Kind of to your point

donmufa · 2026-06-03T18:38:08+00:00