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khi viet tat ca cac so tu nhien tu 1 den 100 thi chu so 0 duoc viet bao nhieu lan
1.so cac so co 2 chu so khac nhau duoc viet boi cac so : 0,1,2
2.Nguoi ta viet lien nhau cac so tu nhien tu 1 den 99 khi do chu so 4 duoc viet .........lan
3.trong cac so tu nhien tu 100 den 10000 co bao nhieu so ma trong cach viet cua no co dung 3 chu so giong nhau
bai 1cho so A 123456 ... 50515253 bang cach viet lien tiep cac so tu nhien tu 1 den 53a) hoi A co bao nhieu chu so tat cab) chu so 2 xuat hien bao nhieu lan c) chu so thu 50 la chu so naod) tinh tong cac chu so cua Abai 2viet lien tiep cac so tu nhien tu 5 den 90 ta duoc so B 5678910 .... 888990a)hoi B co bao nhieu chu so b) chu so 2 xuat hien bao nhieu lan c) chu so thu 50 la chu so nao d) tinh tong cac chu so cua Bban nao tra loi ho minh nhe minh tich ngay lap tuc
Đọc tiếp
bai 1
cho so A = 123456 ... 50515253 bang cach viet lien tiep cac so tu nhien tu 1 den 53
a) hoi A co bao nhieu chu so tat ca
b) chu so 2 xuat hien bao nhieu lan
c) chu so thu 50 la chu so nao
d) tinh tong cac chu so cua A
bai 2
viet lien tiep cac so tu nhien tu 5 den 90 ta duoc so B = 5678910 .... 888990
a)hoi B co bao nhieu chu so
b) chu so 2 xuat hien bao nhieu lan
c) chu so thu 50 la chu so nao
d) tinh tong cac chu so cua B
ban nao tra loi ho minh nhe minh tich ngay lap tuc
1.a Hay viet tap hop A cac so tu nhien ko vuot qua 10 bang 2 cach,bieu dien tren tia so cac phan tu cua tap hop Ab Xac dinh tap hop B cac diem bieu dien cac so tu nhien o ben phai diem 3 va ben trai diem 10 tren tia so.2.a Dung 3 chu so 4,5,7 viet tat ca cac so tu nhien co 2 chu so moi moi chu so chi dc viet mot lan.b Dung 3 chu so 6,3,0 viet tat ca cac so co 3 chu so , moi chu so chi duoc viet mot lan.c Dung 4 chu so 1,5,4,8 lap duoc bao nhieu so tu nhien co 4 chu so khac nhau6.a Tim 3 so tu nh...
Đọc tiếp
1.a Hay viet tap hop A cac so tu nhien ko vuot qua 10 bang 2 cach,bieu dien tren tia so cac phan tu cua tap hop A
b Xac dinh tap hop B cac diem bieu dien cac so tu nhien o ben phai diem 3 va ben trai diem 10 tren tia so.
2.a Dung 3 chu so 4,5,7 viet tat ca cac so tu nhien co 2 chu so moi moi chu so chi dc viet mot lan.
b Dung 3 chu so 6,3,0 viet tat ca cac so co 3 chu so , moi chu so chi duoc viet mot lan.
c Dung 4 chu so 1,5,4,8 lap duoc bao nhieu so tu nhien co 4 chu so khac nhau
6.a Tim 3 so tu nhien lien tiep co tong bang 48.
b Tim 4 so tu nhien chan lien tiep co tong bang 60
7.a Tim mot so tu nhien co chu so tan cung bang 2. Biet rang neu xoa chu so hang don vi cua no thi so moi giam di 1811 don vi
b Tim mot so tu nhien co 3 chu so biet rangneu viet them chu so 3 vao tan cung ben trai ta duoic so bang 26 lan so da cho
8.a Mot cuon sach co 147 trang duoc danh so tu 1. Hoi phai dung bao nhieu chu so da danh trong cuon sach.
b Nguoi ta dung 2016 chu so de danh so trang mot cuon sach hoi cuon sach do co bao nhieu trang
Chu so thu 1000 o trang nao va la chu so gi ?
HOI DAIIIIII NHUNG CAC BAN THONG MINH GIUP MINH NHA DAU DAU WA
CAC BAN HAY PHAN BIET RO CHU SO & SO GIUM MINH NHA
THANK YOU NHIEU
- tim so chu so chan co 4 chu so
- viet tat ca cac so tu 100 den 999phai dung bao nhieu chuvso 9
-co bao nhieu so le co 3 chu so
- viet 1000 sdo tu nyhien dau tien hoi chu so 3 cco mat bao nhieu lan
-viet tap hop cac so tu nhien co 2 chu so trong do a ) chu so hang chuc nho hon hang don vi la 4 b) chu so hang chuc gap 3 lan chu so hang don vi c) chu so hang chuc nho hon chu so hang don vi ( tong 2 chu so = 12)
Viet lien tiep cac so tu nhien tu 1 den 100 ta duoc so co bao nhieu chu so?
khi viet lien cac so tu nhien tu 1 den 99 thi chu so 5 xuat hien bao nhieu lan ?
B1: Voi cung ca 4 chu so :9;6;3;2 co the viet tat ca bao nhieu chu so co 4 chu soB2: Ban Gia mua 1 quyen sach day 678 trang.Ban Gia danh so trang tu 1 den 678.Hoi can viet bao nhieu chu cac chu so de danh het so trong quyen sachB3:khi viet tat ca cac so tu nhien tu 1den 100 thi A,chu so 2 lap lai bao nhieu lanB,chu so 3 lap lai bao nhieu lancac ban lam tung bai mot cung dccam on cac ban
Đọc tiếp
B1: Voi cung ca 4 chu so :9;6;3;2 co the viet tat ca bao nhieu chu so co 4 chu so
B2: Ban Gia mua 1 quyen sach day 678 trang.Ban Gia danh so trang tu 1 den 678.Hoi can viet bao nhieu chu cac chu so de danh het so trong quyen sach
B3:khi viet tat ca cac so tu nhien tu 1den 100 thi
A,chu so 2 lap lai bao nhieu lan
B,chu so 3 lap lai bao nhieu lan
cac ban lam tung bai mot cung dc
cam on cac ban
B1: Voi cung ca 4 chu so :9;6;3;2 co the viet tat ca bao nhieu chu so co 4 chu soB2: Ban Gia mua 1 quyen sach day 678 trang.Ban Gia danh so trang tu 1 den 678.Hoi can viet bao nhieu chu cac chu so de danh het so trong quyen sachB3:khi viet tat ca cac so tu nhien tu 1den 100 thi A,chu so 2 lap lai bao nhieu lanB,chu so 3 lap lai bao nhieu lancac ban lam tung bai mot cung dccam on cac ban
Đọc tiếp
B1: Voi cung ca 4 chu so :9;6;3;2 co the viet tat ca bao nhieu chu so co 4 chu so
B2: Ban Gia mua 1 quyen sach day 678 trang.Ban Gia danh so trang tu 1 den 678.Hoi can viet bao nhieu chu cac chu so de danh het so trong quyen sach
B3:khi viet tat ca cac so tu nhien tu 1den 100 thi
A,chu so 2 lap lai bao nhieu lan
B,chu so 3 lap lai bao nhieu lan
cac ban lam tung bai mot cung dc
cam on cac ban