My sister started secondary math teacher and left him five riddles. They are not very difficult (keep in mind they are for boys 12/13 years), but one that we can not solve xDD.
1) This problem is a clock in six separate parts, the way you want, but with the condition that each party the sum of the numbers the same.
2) Try to form the number 10 using four times the number 4.
3) It is known that Mr. Carlos Xavier Vázquez affectionately call him "Cientoquince." "C & o
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