tim 5 so nguyen to. biet rang 1 trong 5 so do co gia tri bang tong 2 so nguyen to va bang hieu 2 so nguyen to con lai

tim so nguyen to biet rang so do bang tong 2 so nguyen to va bang hieu 2 so nguyen to

tim so nguyen to biet rang so do bang tong cua 2 so nguyen to va bang hieu cua 2 so nguyen to

tìm so nguyen to p biet rang so do bang tong 2 so nguyen to va bang hieu 2 so nguyen to

tim so nguyen to,biet rang so do bang tong cua hai so nguyen to va bang hieu cua hai so nguyen to

Tim mot so nguyen to p biet rang p bang tong cua 2 so nguyen to va bang hieu cua hai so nguyen to. 

Giup minh nha cac bn, minh gap lam.

a, Chung minh rang 5m+3 va 3m+2 la 2 so nguyen biet rang 1 so bang 10 ngen to cung nhau voi m la so nguyen to bat ky.

b,Tim 1 bo ba so nguyen to biet rang 1 so bang 10 phan tram tong cua 3 so can tim

Ai lam nhanh nhat minh tick cho

Tim mot so nguyen to bang tong hai so nguyen to va bang hieu hai so nguyen to

Tim mot phan so,biet rang neu them 2 vao tu so va giu nguyen mau so thi duoc phan so co gia tri bang 1;neu them 3vao mau so va giu nguyen tu so thi douc phan so co gia tri bang 1/2?