Các câu hỏi tương tự
mot phan so co tu be hon mau la 8 neu them vao tu 3 don vi va giam mau di 3don vi thi duoc phan so 5/6 .tim phan so ban dau
tu cua mot phan so nho hon mau cua no la 50 don vi. neu them vao tu 17 don vi , vao mau 2 don vi thi duoc phan so moi bang nghich dao cua phan so ban dau. tim phan so ban dau
Mẫu số cua mot phan so lon hon tu so cua no la 3 don vi neu tang ca tu va mau cua no then 2 don vi thi duoc phan so moi bang phan so1/2 tim phan so ban dau
tim phan so co dong thoi cac tinh chat sau
a/Tu cua phan so la so tu nhien co mot chu so
b/Hieu giua tu so va mau so la 4
c/Neu giu nguyen tu so va viet them vao ben phai mau so mot chu so dung bang tu so,thi duoc phan so moi bang phan so 1/5
Mau so cua 1 phan so lon hon tu so cua no la 3 don vi . Neu tang ca tu va mau them 2 don vi thi duoc phan so moi bang 1 phan 2 . Tim phan so ban dau
tim phan so co cac tinh chat sau
a)Tu so cua phan so la so tu nhien co mot chu so
b)Hieu giua tu so va mau so bang 4
hop chat A co cong thuc phan tu la \(M_2X\). Tong so hat mang dien nhieu hon so hat ko mang dien la 116 , trong do tong so hat mang dien nheu hon tong so hat ko mang dien la 36 . Nguyen tu khoi cua X lon hon nguyen tu khoi cua M la 9 . Tong so hat trong nhuyen tu X nhieu hon tong so hat trong nguyen tu M la 14 . Xac dinh cong thuc phan tu cua A
mot so tu nhien co hai chu so. Chu so hang don vi gap 2 lan chu so hang chuc. Neu them chu so 1 vao giua chu so ay thi duoc 1 so moi lon hon so ban dau la 370. Tim số ban đầu.
giai giup mk vs cac bn . aj giaj dc mk cam on rat nhiu.
tim so tu nhien co 2 chu so biet rang chu so hang chuc lon hon chu so hang don vi la 5 va khi dao nguoc thu tu 2 so do ta duoc so moi =3/8 so ban dau