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mot so co 3 chu so chu so tan cung ben trai la 4 neu chuyen chu so 4 nay xuong cuoi thi duoc mot so moi bang 3/4 so ban dau . tim so do
tim so chinh phuong co 4 chu so sao cho 2 chu so dau tao thanh so chinh phuong va 2 chu so cuoi cung tao thanh so chinh phuong
Tim 1 so co 6 chu so tan cung la chu so 4.Khi chuyen chu so 4 len dau con cac chu so khac giu nguyen thi ta duoc so moi gap 4 lan so cu ?
GIAI CHI TIET CHO MINH NHE!
tim 1 so co 6 chu so tan cung la chu so 4 khi chuyen so 4 len dau con cac chu so khac giu nguyen thi ta duoc so moi gap 4 lan so cu
mot so chinh phuong co chu so hang chuc la mot so le . tim chu so tan cung cua so chinh phuong do
Cho S = 2011.72015+4.19766 mu2015
Tim chu so tan cung cua S.S co phai la so chinh phuong ko?
trong he thap phan co bn so thoa man dieu kien
1,co 5 chu so
2,co 5 cs khac nhau
3,co 5 chu so trong do co c|s tan cung la 4
cho A la tap hop so co 3 chu so tan cung la chu so 5 . tap hop A co so phan tu la
Bai1:cmr 2 stn dang 2n+3 va 3n+2 bao gio cung la 2 so nguyen to cung nhau.
Bai 2:tim 2 chu so a ; b biet (a+b)(a-b)=20.
Bai 3: tim 2 stn lien tiep co 2 chu so sao cho 1 so chia het cho 25, so kia chia het cho 4.
Bai 4: tim a;b biet a.b=360 va BCNN(a,b)=60
