viet them chu so 4 vao giua chu so 7 va chu so 5 duoc so moi la ..745......,so moi hon so da cho la ..670......
viet them chu so 4 vao giua chu so 7 va chu so 5 duoc so moi la ..745......,so moi hon so da cho la ..670......
1.tim 1 so biet neu viet them vao ben phai so do co 1 chu so 6 thi ta duoc 1 so moi hon so da cho la 888 don vi
2.cho 1 so co 2 chu so biet neu viet them 1 chu so n vao ca dang truoc va dang sau so do thi ta duoc 1 so moi co 4 chu so . So moi gap 21 lan so da cho . Tim so da cho va so n viet them
CHO MOT SO CO HAI CHU SO . NEU VIET THEM CHU SO 7 VAO BEN TRAI SO DO THI DUOC SO MOI. TONG CUA SO MOI VA SO DA CHO LA 846 . TIM SO DA CHO .
CHO MOT SO CO HAI CHU SO . NEU VIET THEM CHU SO 5 VAO BEN TRAI SO DO THI DUOC SO MOI . TONG CUA SO MOI VA SO DA CHO LA 690 . TIM SO DA CHO ?
cho mot so co 3 chu so. biet rang khi viet them chu so 2 vao ben trai so do ta duoc so moi, tong cua so moi va so da cho la 2492. tim so do.
cho mot so biet rang neu viet them vao ben phai so do mot chu so thi duoc so moi va tong so moi va so phai tim la 467.tim so phai tim va chu so viet them
cho mot so biet rang neu viet them vao ben phai so do mot chu so thi duoc so moi va tong cua so moi va so phai tim la 467 tim so phai tim va chu so viet them
cho mot so co hai chu so neu viet them chu so 6 vao ben trai chu so da chothi duoc so moi tong cua so moi va so da cho la746 tim so da cho
hieu cua hai so la 134 neu viet them mot chu so vao tan ben phai so bi tru thi duoc hieu moi la 2297 tim so bi tru so tru va chu so viet them
hieu 2 so la 134 viet them mot chu so vao ben phai so bi tru va giu nguyen so tru ta duoc so moi 2297 tim chu so viet them