Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
boygirl_c đã viết:PAST2 :THE ENGLISH MATH:
For save your time : toi se dich ra tieng Viet de toan nay:
1.Tren 5 gia sach of thu vien co xep 160 quyen sach ,trong do co 1 gia chi co 3 quyen sach .,Chung minh rang :trong gia sack khac ,ta co the tim duoc 1 gia co khong hon 40 quyen sach ,
2. Tu thanh pho A à B :999km
doc duong nguoi ta tron cac cot cay so trong do ghi khoang cach tu A-à B
0/999 ;1/998 ; 2/997 ; …….; 999/0
trong cac cay cot chi cay so ay ,co ? cot ma tren do cac so chi khoang cach chi su dung hai chu so ma thoi
3.Cho :nguoi noi that la nhung nguoi ma tat ca nhung dieu ho noi la that
nguoi noi doi la nhung nguoi ma tatca nhung dieu ho noi la doi
a, neu cho nguoi noi that 1 cau hoi sao cho chi voi cau hoi ay trong hai lan hoi ta duoc 2 cau tra loi khac nhau .
b, gap 1 nguoi noi that va 1 nguoi noi doi .Ban hay dat cho ho 1 cau hoi sao cho ca hai nguoi cung co 1 cau tra loi .(very easy)