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资料分析 - Coggle Diagram
资料分析
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速算技巧: 解决算的慢
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特殊分数
1/2=5% 1/3=33.3% 1/4=25% 1/5=20% 1/6=16.7% 1/7=14.3% 1/8=12.5% 1/9=11.1% 1/10=10%
1/11=9.1% 1/12=8.3% 1/13=7.7% 1/14=7.1% 1/15=6.7% 1/16=6.25% 1/17=5.9% 1/18=5.6% 1/19=5.3% 2/3=0.671
11^2=121 12^2=144 13^2=169 14^2=196 15^2=225 16^2=256
1.2^4=2+ 1.1^4=1.46+
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