Ban oi suy ngi lai di ban phai cho minh biet bao nhieu so chu
co the lap duoc
12 lan
con rat nhieu
ck nha
tu cac so (1,2,3,4,5,6) lap duoc bao nhieu so co 3 chu so chan (cac chu so khac nhau)
cac anh chi giai dung trinh do lop 3 thi em moi hieu duoc
Tu cac so 2 , 4 , 6 , 9 co the viet duoc bao nhieu so co 3 chu so
viet lien tiep cac so tu nhien tu 1 den 100 thanh mot so co nhieu chu so . hoi so viet duoc do co tat ca bao nhieu chu so
Cho 3 chu so a b c khac nhau va khac 0.biet a + b + c bang 8. Tinh tong cac chu so co 2 chu so khac nhau duoc lap tu 3 chu so da cho
bài 1: a) binh nghi ra mot so .Biet rang so lon nhat co hai chu so hon so do la 65.tim so binh da nghi.
b) an nghi ra mot so. biet rang so do be hon so be nhat co ba chu so la 15. tim so an da nghi.
bai 2: tu ba chu so 5, 2, 3 an lap duoc so lon nhat va so be nhat co mat du ba chu so do , roi tinh hieu hai so vua lap duoc . hieu do la bao nhieu ???nhanh len nhe mik dang can rat gap
cho mot so tu nhien co 3 chu so abc neu doi cho cac chu so thi ta duoc so moi .hoi co tat ca bao nhieu so
Cho 3 chu so a b c khac nhau va khac 0.biet a + b + c bang 8. Tinh tong cac chu so co 2 chu so khac nhau duoc lap tu 3 chu so da cho
tu cac chu 3,7,9 nguoi ta co the viet bao nhieu so co 2 chu so khac nhau lon hon 45
tu 3 chu so 3 , 4 ,5 viet tat cacac so co 3 chu so(moi chu so khong duoc lap lai)
