3 articles trouvés pour ce sujet.








When does sqrt(x^2+y^2)=x+y? 
20160330 

Margret pose la question : when does sqrt(x^2+y^2)=x+y Penny Nom lui répond. 





Children and probability 
20020116 

Bill pose la question : If a family has four children, what is the probability that all 4 are the same sex? Vanrei Volodin lui répond. 





What did the girls score on average? 
20010720 

Rajesh pose la question : The students of two schools were sitting the same test. The students attending the first school scored 74 on average; within this the average scores of the boys and the girls were 71 and 76, respectively. The corresponding scores in the other school were 84, 81 and 90, respectively. If the average score of all boys was 79, what did the girls score on average? Penny Nom lui répond. 


