Z
zorroz


ai co cai de hsg thi post len em cai! thanks nhiu
nhan tien co bai nay ai lam dc thi giup voi nha
cho P=1*2*3*4*...*2010(1+1/2+1/3+1/4+...+1/2010)
chung minh P chia het cho 2011!
thanks nhiu nha (em dang bi bai nay lam do)
nhan tien co bai nay ai lam dc thi giup voi nha
cho P=1*2*3*4*...*2010(1+1/2+1/3+1/4+...+1/2010)
chung minh P chia het cho 2011!
thanks nhiu nha (em dang bi bai nay lam do)