Batman (ivan) wants to sell

Maybe you know that the E-Potion and the T-Potion cost now 260 coins.
I want an E-Potion but I think I don't need my T-Potion, so the first person who read that and want a T-Potion can ask me because I sell mine for 250 coins, yes, only 10 coins cheaper, but they are 10 coins so if you want buy it

*This offer is only available for today sunday 8th and for tomorrow monday 9th*

Euler Piruleta Vs. The Evil Rangers and Their Megazords

Although we have tried to contain it, the Sumatra Virus evolved and mutated and it got to Japan.  You know what happens in Japan… they are fond on robots, samurais and all that stuff, thus the virus turned the population into Evil Power Rangers and Evil Megazords. 

The only person who seems immune to the virus is Hiroki-San, an elderly grandpa who lives in the mountains. He is determined to end the chaos Japan is living in, but he needs time to think thoroughly about a schem. The first think he needs to do is reinforcing his own house with anti-Zord mines, one per square meter.

Unfortunately, he doesn’t know the surface of his land, he only has a blueprint. He wonders “how can I get the surface of my land with only this blueprint?”. Suddenly, something rings the bell and he remembers that decades ago he had learnt a way to obtain the surface of a triangle knowing only the lengths of its sides: Heron Formula. Quickly, he looks through his notes and finds a piece of paper with it!

   

                             SCALE:    1 : 200

a)      Can you help Hiroki-San to get the surface of his land?

b)     How many anti-Zord mines will he have to use to prevent his home from being assaulted?

TIPS:  You have to print the pdf version to get the blueprint. Use a ruler to measure the lengths. Don’t forget you’ll have to use the scale at some point to get the surface of the real land, and not the surface of the blueprint.

Printable version available.

Deadline: December the 15th 

Let's honor the real and almignthy power rangers who gave my generation endless hours of (repeatedly and relentlessly the same) fights and adventures.

Original Opening 1991

Morphing and UltraMegaZord

And prior to the Power Rangers (you would have never heard about them) there were the BIOMAN (1988), only three warriors from japan:

Bioman 1988 Spanish Opening

León Meteoro! Delfín Luchador! Aeorocondor!! <3

PS: I cannot correct the previous challenge because I forgot your written answers are in the High School. I'll tell you on wednesday!

PS: Alberto, Iñaki G, Jorge and Ivan have 2 positives (that is 40 extra coins!!!) and Miguel ahas 1 positive (20 coins) thanks to the previous challenge. Congratulations! :D

Euler Piruleta Vs. The Braindead-Zombies

A virus from Sumatra has been introduced in a small village by an infected rat. This despicable virus turns people and animals into evil-hilarious zombies.

Fortunately, the militaries have managed to confine the civilian zombie population into a piece of land delimited by an iron fence.

However, these monstrous creatures ought to be exterminated to prevent the infection being spread all over the Earth!!

The clock is ticking!

a)  Can you calculate how many meters of titanium fence do they need to use to surround the land (to reinforce the iron fence)?

b)  Once the land is secured, it is vital to calculate its surface to produce the poisonous gas that will eradicate these evil creatures once and for all.

TIPS:  Circumference’s surface:

         Circumference’s length:

        Notice that the curved lines which join opposite vertices of a square have the 

       shape of a circumference:

Deadline: November the 28th.

Printable version available.

The idea of this challenge comes from the great Peter Jackson's 1992 film "Braindead", starring the aunt of my beloved friend and amazing Maths teacher Maria whom I would like to dedicate this crazy challenge :P Even the trailer is hilarious!

Nevertheless, if you would like to try something that is not so related to human organs, "Full Metal Alchemist Brotherhood" is probably one of the best anime series of the last few decades:

PS: Jorge, Alberto, Juan and Iñaki G handed the right solution to the last challenge!

Euler Piruleta Vs. ChairCher

ChariCher is the result of an unsuccessful fusion between Matfor’s legendary music Diva Cher and one chair from her office. The result is a monster who has prepared a single that will blow up Matfor inhabitants’ tympanums.

The only way to dismantle that single radio broadcast is placing the numbers from 1 to 12 in the panel below in such way that every four numbers aligned sum up always the same quantity.

Can you get the right configuration of numbers from 1 to 12 verifying that the addition of any 4 aligned numbers gives always the same result?

Deadline: November the 15th

Printable Version available.

As I told you, ChairCher is the only living artist who had 6 number 1 hits in 6 different decades. If you have a look at the videos below, you will see that the evoluation is quite interesting... :P

1960s: I got you babe

1970s: Gypsys, Tramps and Thieves

1980s: If I could turn back time

1990s: Believe

2000s: A different kind of love song

2010s: You haven't seen the last of me

Have a nice weekend!!!

PS: Alberto, Carlos, Gómez, Iván, Verónica, Leyre G, Miguel, Tania and Manu have extra coins due to the last challenge!

Euler Piruleta Vs. Robotnic

Robotnic has been promoted and he is now the head ruler of Matfor’s Bank. Euler needs to get his money out of the bank to buy a new surfboard since the one he had did not survive to the last summer.

The problem Euler finds is that Robotnic has been messing with the Bank’s software and now he would only get his money if he manages to introduce in the mobile app the 4-number code verifying the 4 conditions below:

Can you get the right combination of numbers ABCD that would unlock Euler’s Money?

Printable Version available!

Deadline: November the 2nd.

Have a look at the outrageously tacky clothes of who is considered the most successful spanish singer from the 80's. Unfortunately, he had a tragic and premature death when he was only 41 years old:

Tino Casal - "Eloise"

PS: Alberto, Jorge, Iván, María G, Iñaki G and Miguel deserve last challenge's positive.

Euler Piruleta Vs. Quickman

I'll be brief too... :P

Quickman is helping Euler to develop a superhero speed of thinking.

He challenges Euler to give the most possible accurate answer to the problem of the square roots.

1)    Which values of    verify that ?
    2)    Which values of    verify that ?

Deadline: Friday the 25th of October
Printable Version available.

Pre-evaluation week! Let's smileeeeee!

Two Door Cinema Club - "What you know"

PS: Miguel, Jorge, Iván, Alberto, María G. and Iñaki G. have received extra coins for their solutions!

Euler Piruleta Vs. Sefirot

One of the former evil rulers of Matfor, Sefirot, is planning to take advantage of the current situation (one of the future kings has been kidnapped and the other one has been reported missing) to launch a nuclear strike.

Euler has managed to enter his base and he has reached the warehouses where the nuclear warheads are hidden. The first warehouse has 1 nuclear warhead, the second one 2 nuclear warheads, the third 3 warheads… Unfortunately, Euler realizes that there are 100 warehouses and that the number of warheads keeps increasing as described.

Furthermore, the warheads are surrounded by fake circuits with the same shape and size as the warheads, and they must be deactivated first!

a)      How many fake warheads will be surrounding the 5 nuclear warheads kept in the fifth warehouse?
b)     And in the tenth warehouse?
c)      How many fake warheads have to be deactivated by Euler for neutralizing all the warheads kept in the 100.

Deadline: October the 11th.
Printable Versiona available. 

Have a nice weekend and enjoy Villava's "Fiestas de"... EPIC MUSIC!!

Vangelis - Mythodea Movement 1

Last challenge winners: Jorge, Iván, Tania, Carlos, Iñaki G.