doi bieu dien the duc cua mot truong hocco so nu bang 1/10 so nam.neu bot di 100 ban nam thi so ban nu bang 1/6 so ban . hoi ban dau so ban nam la bao nhieu

x+1+2+3+4+5+6+7+8+9+10+11+...+100=250000

Hoi x bang bao nhieu

tong ket dot thi dua hoc tot lap thanh tich chao mung ngay thanh lap dang ,so diem 10 cua 4 to lop 5 a dat nhu sau. to 1 bang 1/2 tong so diem 10 cua 3 to con lai ,so diem 10 cua to 2 bang 1/3 tong so diem 10 cua 3 to con lai .so diem 10 cua to 3 bang 1/4so diem 10 cua 3 to con lai ,so diem 10 cua to 4 la 26 diem 10 . hoi lop 5a dat bao nhieu diem 10 . moi to dat bao nhieu diem 10 .nho cac ban giup minh

co so cho bang so ga.Biet so chan cho nhieu hon so chan ga la 10 cai.Hoi co bao nhieu con ca hai loai va co tat ca bao nhieu cai chan?

biet 25% cua mot so la 10 . hoi so do bang bao nhieu

co bao nhieu phan so co gia tri bang 6/10

Tuoi em bang 1/5 tuoi bo , tuoi chi bang 3/ 10 tuoi bo . Hoi 

a tong so tuoi cua 2 chi em bang bao nhieu han tuoi bo ?

b Tuoi bo hon tong so tuoi hai chi em bao nhieu phan ?

biet 25% cua mot so la 10. hoi so do bang bao nhieu

a.10  b.20  c.30  d.40

trong mot phep tru tong so bi tru,so tru va hieu bang 10. vay so bi tru la bao nhieu