Các câu hỏi tương tự
chung minh rang moi so nguyen to lon hon 2 deu viet duoc duoi dang 4n+1 hoac 4n+3
chung minh rang moi so lon hon 3 deu co dang 6^n+_1
cho P la so nguyen to lon hon e
a)chung to rang P co dang 6k+1hoac 6k+3
b)biet 8P+1va P deu la so nguyen to(Plon hon 3).Hoi P+100 ;a so nguyen to hay hop so
1) Mot so nguyen to chia cho 30 duoc so du la r.Tim r,biet r khong phai la so nguyen to.
2) Chung minh rang:
a/ So 17 khong viet duoc tong 3 hop so khong bang nhau.
b/Moi so le lon hon 17 deu viet duoc duoi dang 3 hop so khac nhau.
Chung minh rang moi uoc nguyen to cua 1*2*3*.........*2002-1 deu lon hon 2002 ( vi ko co dau nhan neu thay bang dau sao nha )
chung minh rang moi uoc nguyen to cua 2014!+1 deu lon hon 2014
cach lam bai : chung to rang moi phan so co dang n+2015/n+2016 ( voi n thuoc N ) deu la phan so toi gian
chung minh rang so 2n+1 va 6n+5 nguyen to cung nhau voi moi so tu nhien n
CMR moi so le lon hon 17 deu viet dc duoi dang tong 3 HS khac nhau