Rules:
At the beginning of each month a Math challenge will come out.
To solve the challenge correctly, you have to:
- Write the solution with an explanation on a paper with your name and group and left it in the mailbox situated in the hall, before the first day of the following month.
- Write the reasoned solution in this website (at the bottom of the article).
There will be 3 categories:
- Pupils (ESO, Batxillerat and Professional Studies).
- Teachers and PAS.
- Web visitors.
May challenge
May solutions:
- The perimeter of the starting square is 32 cm
- 9 people have used the bicycle
April challenge
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These days time passes differently and it seems that we live on another planet, we could call it Iris. One hour on planet Earth equals 3 days on Iris. Months on Iris last 5 weeks and have 6 days every week. How many Earth hours are 2 months on the Iris calendar?
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These days we have seen a women’s tennis tournament, the player who loses a match is eliminated. The results of the games that were played, are given in random order and are: Agnieska played with Simona, Garbiñe won over Venus, Serena won over Ana, Serena won over Garbiñe, Garbiñe won over Agnieska, Flavia won over Petra and Serena won over Flavia. Who played the tournament final?
April solutions:
1. Two months on the planet Iris is 20h on Earth.
2. The final of the tournament will be between Serena and Garbiñe.
Mars challenge
If the side of the square measures 2, its area will be 4, so the area of the painted area would be half of the total, in this case 2.
February challenge
For the second situation to be fulfilled, t hours will have passed, then if one has to meet that one height is 4 times the other: (4-t)/(S1·h) = (5-t)/(S2 · 4h) ; (*) (4 -t) / (⅘ · S2 ·h) = (5 -t) / S2 · 4h ; (4-t) / ⅘ = (5-t) / 4 ;
January challenge
Calculate X of the following figure. Be careful: don’t take anything for granted.
December challenge
The first Math Challenge:
- 888+88+8+8+8 = 1000
- [(8 x 8) + (8 x 8)] x 8 – (8 + 8 + 8) = 1000