A rat muon lam quen voi nu sinh no,ben nghi ra cach moi co ta toi an o nha hang.Nhung moi bang loi moi nhu thong thuong se de bi tu choi,the la A nghi ra 1 ke,roi noi voi nu sinh do:

  -Toi co 2 van de muon hoi co,rat mong co chi tra loi cho la"co" hoac "khong",khong tra loi bang cau khac,dong thoi 2 cau tra loi cua co lai can hoan toan hop li ve mat logich,tuc la khong mau thuan voi nhau.

  Nu sinh do nghe the thi bat cuoi,ben gat dau to y dong y nhu the.

  Ban co biet,A da hoi the nao de dat duoc muc dich moi duoc nu sinh do di an com voi minh khong?

pho hang ngang la 1 trong nhung day pho co Ha Noi,cac nha khoa hoc danh so lien tuc day so le la1,3,5,... toi 61,day so chan2,4,6,...toi 64

a,ben so nha chan trong 1 vuong goc nho chu tich ho chi minh da gui ban tuyen ngon doc lap khai sinh nuoc viet nam dan chu cong hoa ngoi nha co can phong la so 24 de tu dau voi so 2.hoi ngoi nha nay co so nao

b,ben so nha le chu so nao chua duoc dung,chu so nao duoc dung nhieu nhat

c, phai dung tat ca bao nhieu chu so de biet so nha cua day pho nay

1, tinh cac gia tri cac bieu thuc sau mot cach hop li; 

a,27+73-30:(25-10)

133.(33+20)-33.(133+20)

(15^2015+15^2016):15^2015

2,tim so nguyen x biet 

2x-4=-18

(x+1)^3=27

13-(x-2)=11

3,nguoi ta to chuc phat qua cho cac em nho nhan dip tet trung thu gom co 133goibanh,80goi keo,170hop mut duoc chia deu vao cac phan qua.nhung khi chia thi thi con thua 13 goi banh ,8goi keo va 2 hop mut khong chia duoc cac phan qua.hoi nguoi ta da phat qua duoc nhieu nhat bao nhieu ban nho

4,tren tia ax,ve cac diem b,c sao cho ac=4,ab=8.

a,hoi trong 3 diem a,b,c diem nao nam giua 2diem con lai .

b,diem c co phai la trung diem cua doan thang ab khong . vi sao

5, tinh tong a=6+18+36+60+.........+29700+30300

mong cac ban se giup minh nhe ban nao giup minh se like cho nhieu cai va nho co loi giai phep tinh dang hoang nha i love you 

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