(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+1/2)(1+1/10)
=3/2×4/3×5/4×6/5×7/6×8/7×9/8×10/9×11/10
分母和分子约掉
最后答案11/2
(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+1/2)(1+1/10)
=3/2×4/3×5/4×6/5×7/6×8/7×9/8×10/9×11/10
分母和分子约掉
最后答案11/2