Các câu hỏi tương tự
Cho 3 chu so a,b,c thoa man 0 < a < b < c . Goi a la tap hop cac so co 3 chu so , moi so gom ca 3 chu so a,b,c . Biet rang tong cua hai so nho nhat trong tap hop A = 488 . Khi do a + b + c = .........
cho 3 chu so a,b,c thoa man 0<a<b<c . goi a la tap hop cac so co 3 chu so gom ca ba chu so a,b,c . biet rang tong cua 2 so tu nhien nho nhat trong tap hop a = 488 . khi do a + b+c =?
Bai 1 : Cho 3 chu so a ;b ;c thoa man 0< a < b < c. Goi A la tap hop cac so tu nhien co 3 chu so moi so gom ca 3 chu so a, b , c .Biet rang tong cua 2 so nho nhat trg tap hop A =488. Khi do a+b+c=
Bai 2 : Chia cac so tu nhien tu 1 den 100 thanh 2 lop : lop so chan va lop so le .Nhu vay tong cac chu so cua 2 lop hon kem nhau bao nhieu don vi
cho ba chu so a,b,c voi 0<a<b<c
a) viet tap hop A cac so co 3 chu so, moi so gom ca ba chu so tren
b) biet rang tong 2 so nho nhat trong tap hop A bang 499.tim tong cac chu so a+b+c
Cho 3 chu so a,b,c voi 0<a<b<c
a,Viet tap hop A cac so co 3 chu so,moi so gom ca 3 chu so tren
b, Biet tong 2 chu so nho nhat trong tap hop A=499. Tim tong cac chu so a+b+c
Bai 1 :Tim so tu nhien co 6 chu so biet chu so hang don vi la 4 va neu chuyen chu so do len hang dau tien thi so do tang gap 4 lan.
Bai 2:Cho 3 chu so a,b,c sao cho 0<a<b<c.
a]Viet tap hop cac so tu nhien co 3 chu so gom ca 3 chu so a,b,c.
b]Biet tong 2 so nho nhat trong tap A=488.Tim 3 chu so A,B,C.
cho tap hop A ={10;13;17;20;25;31;41;58;61;70} 1)viet tap hop B gom cac phan tu cua tap hop A co chu so 1.Tap hop B co bao nhieu chu so 2) viet tap C gom cac phan tu cua tap hop A co chua chu so 3 3) bieu dien quan he giua cac tap hop A,B,C bang ki hieu
cho A la tap hop cac so tu nhien trong do co chua chu so 0 va B la tap hop cac so tu nhien co dang a0b . Tap hop C gom cac phan tu vua thuoc A, vua thuoc B. Tap hop C co bao nhieu phan tu?
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