（1+1/3)(1+1/4)(1+1/5)(1+1/6)...(1+1/2n-1)(1+1/2n)的值为多少

（1+1/3)(1+1/4)(1+1/5)(1+1/6)...(1+1/2n-1)(1+1/2n)的值为多少
（1+1/3)(1+1/4)(1+1/5)(1+1/6)...(1+1/2n-1)(1+1/2n)的值为多少

（1+1/3)(1+1/4)(1+1/5)(1+1/6)...(1+1/2n-1)(1+1/2n)的值为多少
先把括号里的先加得4/3乘以5/4乘以6/5乘以7/6...2n/2n-1乘以2n+1/2n 解得最后的结果是（2n ＋1）／3

4/3*5/4*6/5......
=（1+2n）/3

（2n ＋1）／3