1/2,1/3,1/6,1/2,1/3,1/6.这个数列的前2010个数的和是多少?

1/6：2/3 （1- 1/100)(1- 1/99) .....(1- 1/4)(1- 1/3)(1- 1/2) (-1 1/2)*(-1 1/3)*......(-1 1/6)*(-1 1/7) 计算：（-1）-[1-(1-1/2*1/3)]*6 计算!（-1）-[1-(1-1/2*1/3)]*6 巧算：(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)*(1/2+1/3+1/4+1/5)(1+1/2+1/3+1/4+1/5)*(1/2+1/3+1/4+1/5+1/6)-(1+1/2+1/3+1/4+1/5+1/6)*(1/2+1/3+1/4+1/5)===== 1 2 3 2 ( ) 6 ((1/2)-1)*((1/3)-1)*((1/4)-1)*((1/5)-1)*((1/6)-1)*((1/7)-1)*((1/8)-1)*((1/9)-1)*((1/10)-1) （1+1/2+1/3+... 1+1+1+1+11+-1-1-1-1-2-3-4-5-6等于 1-1/2+1/3-1/4+1/5-1/6+1/7.-1/50=? (1+1/2)*(1+1/4)*(1+1/6)*.*(1+1/20)*(1-1/3)*(1-1/5)+(1-1/7)*.*(1-1/2 简算：24×(1/2+1/3-1/4-1/6) 1*2*3+1-1+1/6=? （1/2+1/3+1/4+1/6）*24 简算：1/1*2+1/2*3+1/3*4+1/4*5+1/5*6 1+1+1+1+1+1+1+1+1+2+5+4+8+3+6+2+1+4等于多少? 1-1/2+1/3-1/4+1/5-1/6+…+1/15=23*[1/( )+1/( )+1/( )+1/( )] 1+1+1+1+1-5+5-5+1+1-2+3+3+3+3-6-3-3等于多少?