ccho day so 1,2,3,4.....,x tim de chu so gap 3 lan x
cho day 1,2,3,4,...,x tim x de chu so gap 5 lan so so hang
cho day so 10;11;12;13;14; ... ;x. tim x de so chu so gap 4 lan so hang trong day
n=so so hang=(x-10)+1
a=so chu so
neu x<100=> a=2n.
neu x>99 va nho hon 1000=> a=3n
theo dau bai a=4[(x-10)+1]
a=2.[(99-10)+1]+3[(x-100)+1]=4n
180+3x-297=4x-396
180+99=x
x=279
ai trả lời giùm mình đi nhanh lên mình k cho
nhanh len minh k cho vua nhanh vua dung
cho day 31,33,35,...,x . tim x de so chu so cua day gap 3,5 lan so so hang cua day
cho day so 1,2,3,4,5,...,x
tim x de chu so cua day gap 4,5 lan x
cho day so 1 ; 2; 3 ; 4; 5 ..........; x tim so x de so luong chu so cua day gap 5 lan luong so hang cua day
nhanh len nhe
nguoi ta viet 31,32,33,....X.
Tim X de chu so cua day gap 3 lan X
cho day so tu nhien : 1 ; 2 ; 3 ; 4 ; ..................................................................................x
tim x de so chu so cua day gap 3 lan x
tim so a de so chu so cua day gap gap 3 lan a 1,2,3,..,a
cho day so 2,4,6,8,...,x tim x biet so chu so cua day gap 2 lan x