Các câu hỏi tương tự
tim so tu nhien lon hon 0 sao cho tong
1!+2!+...+n! la so chinh phuong
b)tim 1 so co 4 chu so sao cho so do vua la s chinh phuong vua la so lap phuong
neu co so tu nhien n sao cho k =n^2 thi ta noi so k la so chinh phuong tim tat ca cac so ab saocho (ab+ba) la so chinh phuong
mot so chinh phuong co chu so hang chuc la mot so le . tim chu so tan cung cua so chinh phuong 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 so co 4 chu so abcd, biet rang abd la so chinh phuong, neu cong them 72 don vi thi duoc mot so chinh phuong
chung to
Xem chi tiết
a, so co tong cac chu so la 2004 khong la so chinh phuong
b, so co tong cac chu so la 2006 khong la so chinh phuong
c, n = 20044+20043+20042+23 khong la so chinh phuong
so 144 co phai la so chinh phuong hay ko, cac so chinh phuong co chu so tan cung la gi.Cam on!
tim so chinh phuong n co 3chu so biet n chia het cho 3, n va 2n co tong cac chu so k doi
Xem chi tiết
tim so co 3 chu so sao cho hieu cua so ay va so gom 3 chu so ay viet theo chieu nguoc lai la mot so chinh phuong