=500-[1200-{36-26}2].1
=500-[1200-{102}
=500-[1200-100}
=500-1100
=-600
=500-[1200-{36-26}2].1
=500-[1200-{102}
=500-[1200-100}
=500-1100
=-600
CMR : S = 1/5+1/13+1/14+1/15+1/61+1/62+1/63 < 1/2
minh thach ai lam duoc bai nay
9xy4 chia het cho 2; 4;8 (9xy4 co gach ngang tren dau) ai lam duoc se duoc tich
(-4).(+125).(-25).(-6).(-8) . ai lam duoc cho like , cach lam
A={xEn/18chia het cho x,24 chia het cho x}ai lam duoc cho 2 like
cho n la so nguyen to lon hon 3. hoi n^2 la nguyen to hay hop so. ai lam loi giai va lam dung la duoc tich
cho dap an la hop so nhung phai lam cach lam
Chung to 5^ -1chia het cho 4 ai lam duoc thi duoc tich dung
G=1^2+2^2^2+3^2+...........................+2019^2 CAC BAN OI LAM HO MINH VOI
CAN GAP LAM ,ai giai duoc minh tick cho
Tinh :P= 1/2 +1/2^2 + ... + 1/ 2^99
ai lam duoc minh tich cho
2x+11 chia het cho x +13 ai lam duoc thi duoc mot dau tich