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There is a certain family wi...

There is a certain family with both girl and boy children. Each of the boys has the same number of brothers as he has sisters. Each of the girls has twice as many brothers as she has sisters. How many kids are there in this family?

Correct answers: 49

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Gerardus Johannes Mulder

Died 18 Apr 1880 at age 77 (born 27 Dec 1802).Dutch chemist remembered for his analysis of proteins, for which he coined the name (perhaps suggested to him by Berzelius), in French, protéine (1838) based on the stem “proto” from Greek, as a primary or fundamental substance forming the bodies of animals and plants. Further, he isolated fibrin, the protein associated with clotting blood. He also worked in soil chemistry, was the first to analyze phytol correctly during research on chlorophyll, and confirmed Bezelius' suspicion that theine and caffein were the same compound. He published technical works on the chemistry of indigo (1833), wine (1855) and beer (1857).«

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