nho giai ra nha
a ) Co bao nhieu so tu nhien chan co 3 chu so khac nhau
b }Co bao nhieu so tu nhien co 3 chu so trong do co chua dung 1 chu so 5
c )Co bao nhieu so tu nhien co 3 chu so trong do chua dung 2 chu so 5
CO bao nhieu so co 3 chu so chia het cho 5
Ai tra loi nhanh nhat va co loi giai minh se tick cho nguoi do 7 tick luong
co bao nhieu so co 3 chu so trong do co dung 1 chu so 5
ve n tia chung goc (n lon hon hoac bang 2),trong do khongco hai tia nao trung nhau
a,neu n=5 thi co bao nhieu goc tao thanh?
b,neu co 105 goc tao thanh thi nla bao nhieu?
co 48 goi duong gom 3 loai : 5 lang , 2 lang , 1 lang , tong cong co 90 lang , biet goi 1 lang gap 3 lan so goi 2 lang . tinh so goi moi loai
lop 6a co 5 to di trong cay, so nguoi trong noi to bang nhau. Moi nguoi trong 4 hoac 5 cay.Biet tong so cay cua ca lop la 200 cay. Hoi co bao nhieu ban trong 4 cay, bao nhieu ban trong 5 cay
Co bao nhieu so co ba chu so trong do co dung mot chu so 5?
Viet co X quyen vo , Nam co y quyen vo , cho biet : 10 < x < y Viet va Nam moi nguoi co bao nhieu quyen vo
Cau 1: viet 1000 so tu nhien dau tien , hoi chu so 3 co mat bao nhieu lan.
Cau 2:de danh so trang 1 quyen sach nguoi ta dung 1995 chu so.hoi cuon sach day bao nhieu trang.
Cau 3:Giai thich tai sao :
a/so co 4 chu so xyxy khi chia cho so 2 chu so xy lai co thuong la 101.
b/so co 6 chu so xyvxyv khi chia so co 3 chu so xyv lai co thuong la 1001
Cau 4: Cho day so 4,7,10,13,16,.....
a/tim so thu 100 cua day,so thu n cua day .
b/So 45+23 co mat trong day do ko
Cau 5:tim so tu nhien co 5 chu so,biet rang neu them 2 chu chu so vo dang su so do thi duoc so lon gap 3 lan so do co duoc bang cach viet them chu so 2 vao da truoc so do