tong hai so nguyen to la mot so nguyen to. Vay hieu hai so nguyen to la..................................
tong hai so nguyen to la mot so nguyen to. Vay hieu hai so nguyen to la
tim so nguyen to P sao cho P vua la tong cua hai so nguyen to vua la hieu cua hai so nguyen to
cho 26 so nguyen,trong do tong cua 5 so bat ki la mot so nguyen duong.chung to rang tong cua 26 so nguyen da ch la mot so nguyen duong.
dien dung sai
a/tich cua hai so nguyen duong la mot so nguyen duong
b/tich cua hai so nguyen am la mot so nguyen am
c/tich cua 2 so nguyen cung dau luon lon hon moi so do
d/tich cua hai so nguyen khac dau luon nho hon moi so do
e/neu tich hai so nguyen la mot so nguyen duong thi hai so do deu la so nguyen duong
f/neu tich hai so nguyen la mot so nguyen am thi hai so do deu la so nguyen am
tim so nguyen to p sao cho no vua la tong cua 2 so nguyen to vua la hieu cua 2 so nguyen to nao do ket qua bang 5 cho minh cach giai nha
Cho 61 so nguyen .Hoi tong cua 61 so nguyen do la so nhu the nao neu :
a,Tong cua 6 so bat ki trong chung la mot so nguyen am
b, tong cua 6 so bat ki trong chung la mot so nguyen duong
tim so nguyen to,biet rang so do bang tong cua hai so nguyen to va bang hieu cua hai so nguyen to
Cho 31 so nguyen trong do co 5 so bat ki co tong la so nguyen duong.Hay chung to rang tong cua 31 so do deu la so nguyen duong