早教吧作业答案频道 -->数学-->
1,10,31,70,133(A136B186C226D2560,1,3,8,22,63(A163B174C185D1961,4,3,5,2,6,4,7,(A1B2C3D4
题目详情
1,10,31,70,133( A136 B186 C226 D2560,1,3,8,22,63 ( A163 B174 C185 D1961,4,3,5,2,6,4,7,( A1 B2 C3 D4
▼优质解答
答案和解析
1,10,31,70,133( 后项减去前项9,21,39,63,..后项减前项12,18,24,..等差数列()=24+6+63+133=2260,1,3,8,22,63 ( 3=1*3-08=3*3-122=8*3-263=22*3-3()=63*3-4=1851,4,3,5,2,6,4,7,( 4-3=15-3=26-2=4()=7-4=3"
看了 1,10,31,70,133...的网友还看了以下:
直接写得数.3b×1.6=十.8÷十.十1=十.6÷35=十.85×b=十.1×十.1+十.1÷十 2020-04-07 …
6、3.125×(1.6+12/5)÷(5/2-0.625)7/5×1/7×6/13+5/7×1/ 2020-04-07 …
1.直接写得数1/2+1/31/2+1/41/3+1/51/4+2/31/3+3/51/6+2/7 2020-06-13 …
已知(1/3-1/5)×1/2=1/15,(1/5-1/7)×1/2+=1/35,(1/7-1/9 2020-07-17 …
1,3,5,7,15,31,(),(本人得出结论为1+3+5-2=71+3+5+7-1=151+3 2020-07-18 …
0×85=35×5=707÷7=510×6=640÷40=3400-900=72÷12=18×40 2020-07-18 …
(1/3-1/5)×1/2=1/15,(1/5-1/7)×1/2=1/35,(1/7-1/9)*1/ 2020-12-03 …
已知(1/3-1/5)*1/2=1/15,(1/5-1/7)*1/2=1/35,(1/7-1/9)* 2020-12-17 …
己知(1/3一1/5)X1/2=1/15,(1/5-1/7)x1/2=1/35,(1/7-1/9)x 2021-01-12 …
1/7,1/26,1/63,1/124,……1、1/7,1/26,1/63,1/124,),……A、 2021-01-27 …