co the khang dinh tap hop Z bao gom hai bo phan la cac so nguyen duong va cac so nguyen am duoc khong ? tai sao ?
co the khang dinh tap hop z bao gom 2 bo phan la cac so nguyen am va cac so nguyen duong khong? tai sao?
mot nha may co 3 phan xuong . so cong nhan cua phan xuong 1 bang 36% tong so cong nhan nha may so cong nhan cua phan xuong 2 bang 3/5 so cong nhan cua phan xuong 3 . biet so cong nhan cua phan xuong 3 hon so cong nhan cua phan xuong 1 la 18 nguoi . tinh so nguoi moi phan xuong
1 hinh hop chu nhat co the tich la 15,456 m3 , dien tich mat day la 12,88 m2 . tim chieu cao chiec hop : A . 1,2 m B . 2,1 C.4,3 D . 3,4 m
tim trung binh cong cua 12,45 ; 39,67 ; 46,88 A, 45 B.33 C . 11 D . 50.3
1 truong hoc co 1980 hs . so hs nu chiem 98 % so voi h.sinh nam . tim so hs nam
1 san bong hinh chu nhat co chieu dai 11 cm va chieu rong la 9 cm , duoc ve tren ban do ti le 1 : 1000 . tinh D.tich san bong thuc te theo m2
ai tra loi cau nay chac co IQ cao lam
Co the khang dinh rang tap hop Z bao gom hai bo phan do la cac so nuyen am va cac so nguyen duong duoc khong? Vi sao?
phan so 6/35 co the viet duoi dang tich cua hai phan so co tu va mau la cac so nguyen duong co mot chu so
goi A la tap hop cac boi tu nhien cua 3 co hai chu so , B la tap hop cac boi tu nhien cua 5 co hai chu so . Vay so phan tu cua tap hop A giao B la
cho hai so tu nhien khac nhau co trung binh cong cua chung la so lon nhat co 2 chu so .Tim so do ,biet rang so nay bang 80 phan tram so kia
1.Cho so N la so co hai chu so chia het cho 3.Neu viet xen so 0 vao giua hai chu so do roi cong no voi hai lan chu so hang chuc cua so N ta duoc so moi gap 9 lan so N.Tim so do
2.Tong hai so thap phan la 60,1.Neu dich dau phay cua so nho sang ben phai mot hang roi dem tru di so lon thi ta duoc 219,52.Tim hai so do.
3.Tim so co hai chu so biet neu ta them so 33 vao giua hai chu so do thi duoc mot so moi gap so phai tim 89 lan.