198 tick nha phung thi phuong anh
198 tick nha phung thi phuong anh
Tim so tu nhien co hai chu so Biet rang neu lay so do chia cho tong cac so cua no ta duoc thuong la 5 du 12
tim so tu nhien co hai chu so biet rang so do chia cho tong cac chu so cua no thi duoc thuong cung la tong cac chu so cua no
tim so tu nhien lon nhat co 3 CS khac nhau biet so do bang tong tat ca cac so co 2CS khac nhau lap duoc tu ba CS cua so do
Tim mot so tu nhien co hai chu so, biet rang neu lay so do chia cho mot tong cac chu o cua no ta duoc thuong la 7
tim 1 sô tu nhien co ba chu so biet so do chia cho tong cac chu so cua no thi duoc thuong la 11
1.viet so tu nhien nho nhat co tong cac chu so bang 38?
2.mot phep chia hai so tu nhien co thuong la 6 va so du la 33.tim so bi chia,so chia,biet rang tong cua so bi chia,so chia,thuong va so du bang 695.
3.trung binh cong cua 3 so le lien tiep bang 299.tim so lon nhat trong 3 so do?
4.cho phan so a/b.rut gon so phan so a/b ta duoc phan so 5/7.neu them 71 don vi vao tu so va giu nguyen mau so,ta duoc phan so co gia tri bang 18/11.tim phan so a/b?
5.tim y biet:a=(2/11*13+2/13*5+2/15*17+2/17*19+2/19*21)*462-y=19
cac ban giai chi tiet gium minh nhe,ban nao giai duoc minh cho ***** lun
tim mot so tu nhien co 2 chu so , biet rang so do chia cho hieu cua cac chu so cua no duoc thuong la 26 ( du 1 )
tim 1 so tu nhien co 2 so biet rang tich cac chu so cua so do la so tron chuc co 2 cs neu bot so do 3 don vi thi duoc 1 so co 2 cs giong nhau
khi chia mot so co hai chu so cho tong cac chu so cua no, ta duoc thuong bang 3 va du 5. tim so do?