1.3/4+3/4+.+3/4(2008个3/4)2.(1+1/2)*(1+1/4)*(1+1/6)*.*(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)

1.3/4+3/4+.+3/4(2008个3/4)2.(1+1/2)*(1+1/4)*(1+1/6)*.*(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)
1.3/4+3/4+.+3/4(2008个3/4)
2.(1+1/2)*(1+1/4)*(1+1/6)*.*(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)

1.3/4+3/4+.+3/4(2008个3/4)2.(1+1/2)*(1+1/4)*(1+1/6)*.*(1+1/10)*(1-1/3)*(1-1/5)*.(1-1/9)
第一题,分子是3*2008,2008和分母4约分,最后的答案是1506.
第二题,[（1+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)=11/10