数字推理解答(1)01/31/23/52/35/7(3/4)(2)632670-2-9(-28)(3)0129(730)(4)8101418(26)每个数列的括号内为正确答案,求推理过程.

Question

数字推理解答
(1) 0 1/3 1/2 3/5 2/3 5/7 (3/4)
(2) 63 26 7 0 -2 -9 (-28)
(3) 0 1 2 9 (730)
(4) 8 10 14 18 (26)
每个数列的括号内为正确答案,求推理过程.

Answer 1

0 1/3 1/2 3/5 2/3 5/7 (3/4)
1.
0/1 1/3 1/2 3/5 2/3 5/7 (3/4)
奇次项：an=(n-1)/(n+1)
偶次项：an=(2n-1)/(2n+1)
2.
63=4^3-1
26=3^3-1
7=2^3-1
0=1^3-1
-2=(-1)^3-1
-9=(-2)^3-1
()=(-3)^3-1=-28
3.
1=0^3+1
2=1^3+1
9=2^3+1
730=9^3+1
4.
2加素数剩以2,
(2+2)*2=8,
(2+3)*2=10,
(2+5)*2=14,
(2+7)*2=18,
(2+11)*2=26.