gjj778899
花朵
共回答了27个问题采纳率:85.2% 举报
a.13,26,40,55,71,( 88)规律:26-13=13 40-26=14 55-40=15 71-55=16 88-71=17b.2,4,8,14,22,( 32)规律:4-2=2 8-4=4 14-8=6 22-14=8 32-22=10c.12,23,35,48,62,(77 )规律:23-12=11 35-23=12 48-35=13 62-48=14 77-62=15d.1/2,2/3,1/3,2/9,( 2/27)规律:1/2×2/3=1/3 2/3×1/3=2/9 1/3×2/9=2/27"
1年前
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