智力题:1.How can you make 6 out of three 7s?
智力题:1.How can you make 6 out of three 7s?2.What comes once in a minute,twice a moment,but never in a thousand years?3.I know a word of three letters.Add two,and fewer there will be.What is the word?4.Two mothera and two daughters go to a pet store and buy three cats.Each of them gets her own cat.How is this possible?