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(1+1/2)(1+1/4)(1+1/6)(1+1/8)(1+1/10)×(1-1/3)(1-1/5)(1-1/7)(1-1/9)=?要准确数字
题目详情
(1+1/2)(1+1/4)(1+1/6)(1+1/8)(1+1/10)×(1-1/3)(1-1/5)(1-1/7)(1-1/9)=?要准确数字
▼优质解答
答案和解析
(1+1/2)(1+1/4)(1+1/6)(1+1/8)(1+1/10)×(1-1/3)(1-1/5)(1-1/7)(1-1/9)
=（3/2×2/3）×（5/4×4/5）×（7/6×6/7）×（9/8×8/9）×11/10
=1×11/10
=11/10
=（3/2×2/3）×（5/4×4/5）×（7/6×6/7）×（9/8×8/9）×11/10
=1×11/10
=11/10
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