Class

When Pythagoras asked how many students attend the school, said: "Half of the students studying mathematics, 1/4 music, seventh silent and there are three girls at school." How many students had Pythagoras at school?

Result

n =  28

Solution:

n=227=47=28n = 2\cdot 2\cdot 7 = 4\cdot 7 = 28



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