资源描述
数字推理之我的错题、难题集
递推型:
1,0,1,1,2,( ),5
A+B=C
1+0=1
0+1=1
1+1=2
1+2=3
2+3=5
3,9,6,9,27,(),27
a.36 b.9 c.18 d.1/16
A*3=D
3*3=9
9*3=27
6*3=18
9*3=27
113,202,222,400,(440)
a.400 b.555 c.518 d,628
(113-2)*2=222
(202-2)*2=400
(222-2)*2=440
4/3,0,4,8,(28)
a.27 b.21 c.18 d.28
4/3+0=4/3
0+4=4
4+8=12
4/3*3=4,4*3=12
或者
3^-1+1
3^0-1
3^1+1
3^2-1
3^3+1=28
1,3,2,4,5,16,()
a.50 b.86 c.75 d.71
1*3-1=2
3*2-2=4
2*4-3=5
4*5-4=16
5*16-5=75
3,2,3,7,18,(B)
a.36 b.47 c.24 d.70
以第一个3为基数,分别乘以各项
2*3=3+3
3*3=2+7
7*3=3+18
18*3=7+47
或者:
3B=A+C
2,1,-2,-10,4,( )
A-40 B8 C-72 D-6
2*1-4 = -2
1*(-2)-8 = -10
(-2)*(-10)-16= 4
(-10)*4-32= -72
0, 3,17,95,()
A、119 B、239 C、479 D、599
1*1-1=0
2*2-1=3
3*6-1=17
4*24-1=95
5*120-1=599
1,2,6,24,120 分别乘以2,3,4,5
3,16,45,96,( 175 ),288
1*3=3
2*8=16
3*15=45
4*24=96
5*(35)=(175)
6*48=288
3,8,15,24,(35),48
5 7 9 11 13
4,9,15,26,43,( 71 )
5,6,11,17,28 A+B=C
2,1,3,7,24,( 103 )
2+1*1=3
1+3*2=7
3+7*3=24
7+24*4=103
(10.25),13.5,22,41,81
10.25*2-7=13.5
13.5*2-5=22
22*2-3=41
41*2-1=81
2,6,30,210,2310,( )
2*3=6
6*5=30
30*7=210
210*11=2310
2310*13=()
2,3,7,25,121,( 721 )
2*2-1=3
3*3-2=7
7*4-3=25
25*5-4=121
121*6-5=721
2,17,69,139,(140)
2*8+1=17
17*4+1=69
69*2+1=139
139*1+1=140
2,5,9,16,35,( )
(5-2)*3=9
(9-5)*4=16
(16-9)*5=35
(35-16)*6=144
1,3/2, 11/6,25/12,( )
3/2-1=1/2
11/6-3/2=1/3
25/12-11/6=1/4
X-25/12=1/5
32,8,4,3,( 3 )
32*1/4=8
8*2/4=4
4*3/4=3
3*4/4=3
1 , 2 , 1 , 6 , 9 , 10 , ( )
1+2+1=4
2+1+6=9
1+6+9=16
6+9+10=25
9+10+17=36
2,4,0,8,8,24,40,()
0+4*2=8
8+0*2=8
8+8*2=24
24+8*2=40
40+24*2=88
5,6,19,17,(344),-55
A.15 B.344 C.343 D.11
5^2=6+19
6^2=19+17
19^2=17+344
17^2=344-55
2,1,5,11,111,( )
A.1982 B.1678 C.1111 D.2443
(2×1)×2+1=5
(1×5)×2+1=11
(5×11)×2+1=111
(11×111)×2+1=2443
0,3,17,95,( )
A.119 B.239 C.479 D.599
1*1-1 =0
1*2*2-1 =3
1*2*3*3-1 =17
1*2*3*4*4-1 =95
1*2*3*4*5*5-1=599
1,2,5,12,27,()
1*2+0=2
2*2+1=5
5*2+2=12
12*2+3=27
27*2+4=58
0,0,1,5,23 ()
A.119 B.79 C.63 D.47
0*1+0
0*2+1
1*3+2
5*4+3
23*5+4=119
157,65,27,11,5,()
157=65*2+27
65=27*2+11
27=11*2+5
11=5*2+(1)
15,65,175,369,()
A、671 B、690 C、675 D、717
3*5
5*13
7*25
9*41
11*61=671
2,15,40,77,(126)
1*2
3*5
5*8
7*11
9*14=126
-1,4,21,56,115,(204)
1*-1
2*2
3*7
4*14
5*23
6*34=204
-1,2,7,14,23,34差为3,5,7,9,11
或者做差得到:5,17,35,59,89
再次做差得到:12,18,24,30 等差
4/3,1,2,7,( )
A、27 B、21 C、18 D、24
4/3*3-3=1
1*3-1=2
2*3+1=7
7*3+3=24
0,1,1,4,19,()
A*3+B^2=C
0*3+1^2=1
1*3+1^2=4
1*3+4^2=19
4*3+19^2=
2,1,5,11,111,()
(A*B)*2+1=C
0,1,3,6,9,45,(),126
(0+1)*3=3
(1+3)*1.5=6
(3+6)*1=9
(6+9)*3=45
(9+45)*1.5=81
(45+81)*1=126
24,70,208,()
A140 B416 C622 D278
3A-2=B
24*3-2=70
70*3-2=208
208*3-2=416
0,1,3,8,21,()
A42 B29 C55 D63
3B-A=C
2,7,24,77,()
A154 B101 C238 D609
2*3+1=7
7*3+3=24
24*3+5=77
77*3+7=238
-1,-1,-2,-1,-3,( )
A.-2 B.0 C.-5 D.-1
(-1)^3+(-1)=-2
(-1)^2+(-2)=-1
(-2)^1+(-1)=-3
(-1)^0+(-3)=-2
3,7,21,64,( )
A100 B101 C102 D103
解法一:除以3得到:0,1,0,1,(0)选C
解法二:
3*3+7=16=4^2
7*4+21=49=7^2
21*5+64=169=13^2
64*6+(100)=484=22^2
4,7,13,22
3 6 9
2 ,3 ,8 , 13 ,( )
A29 B30 C 31 D32
2*2-1=3
3*2+2=8
8*2-3=13
13*2+4=30
22,8,28,40,24,32,(16)
A-B的绝对值乘以2=C
5 6 6 9 () 81
A 12 B15 C18 D21
A*B分别除以:5,4,3,2得到C
5 6 6 9 () 90
A 12 B15 C18 D21
(5-3)*(6-3)=6
(6-3)*(6-3)=9
(6-3)*(9-3)=18
(9-3)*(18-3)=90
4,11,25,(),7
A20 B22 C24 D26
4*3-1=11
11*2+3=25
25*1-5=20
20*0+7=7
2,6,10,18,32,()
A16 B 58 C 64 D 61
解析:
6*2-2*1=10
10*3-6*2=18
18*4-10*4=32
32*5-18*8=16
1,2,3,8,39,( )
A 72 B 104 C 225 D428
(1+2)*3-1=8
(2+3)*8-1=39
(3+8)*39-1=428
11,8,10,21,72,()
A 173 B 172 C 730 D 345
11*1-3=8
8*2-6=10
10*3-9=21
21*4-12=72
72*5-15=345
16. -3 6 0 12 12 36 ()
A.64 B36 C60 D48
A+B=3,6,12,24,48,96 96-36=60
19. 8 3 7 8.5 12 ()
A14.5 B15.5 C16.25 D20
7=8/2+3
8.5=3/2+7
12=7/2+8.5
X=8.5/2+12=16.25
22. 3 4 5 11 14
A104 B105 C 106 D107
A^2=B+C
1,3,-2,-14,17,()
A -238 B -249 C -252 D -255
1*3-5
3*-2-8
-2*-14-11
-14*17-14=-252
14,2,15,12,2,()
A -11 B 24 C -111 D 39
A+B-C得到:1,5,25,125
12+2-(-111)=125
次方:
80,62,45,28,( )
9^2-1=80
8^2-2=62
7^2-4=45
6^2-8=28
5^2-16=9
5,7,4,9,25,()
A.5 B.27 C.256 D.625
(5-7)^2=4
(7-4)^2=9
(4-9)^2=25
(9-25)^2=256
5,6,19,17,( ),-55
5^2=6+19
6^2=19+17
19^2=17+X
17^2=X-55
1,2,9,64,( )
1^0
2^1
3^2
4^3
(5^4)=625
5 ,5 ,14 ,38 ,87 ,( )
A.167 B. 168 C.169 D. 170
做差得到:0,9,24,49,(80)
1^2-1=0
3^2=9
5^2-1=24
7^2=49
9^2-1=80
87+80=167
1 2 9 28 ( )
A 57 B 68 C 65 D 74
0^3+1=1
1^3+1=2
2^3+1=9
3^3+1=28
4^3+1=65
1,13,4,22,31,( ),274
A. 93 B. 31 C. 103 D. 216
3^1=4-1
3^2=22-13
3^3=31-4
3^4=103-22
3^5=274-31
2,15,7,40,77,( )
A、96 B、126 C、138 D、158
方法一:
2+15+7+(16)=40
15+7+40+(15)=77
7+40+77+(14)=138
方法二:
15-2=13=4^2-3
40-7=33=6^2-3
138-77=61=8^2-3
13、15、35、63、80、()
A、99 B、63 C、86 D、80
(1+3)^2-1=15
(1+5)^2-1=35
(3+5)^2-1=63
(6+3)^2-1=80
(8+0)^2-1=63
11/10,2,7,17,()
10^-1+1
8^0+1
6^1+1
4^2+1
2^3+1=9
14,20,54,76,(126)
3^2+5
5^2-5
7^2+5
9^2-5
11^2+5=126
5,13,25,41,61
1+4=5
4+9=13
9+16=25
16+25=41
25+36=61
2,30,130,350,(738)
1^3+1
3^3+3
5^3+5
7^3+7
9^3+9=738
63,72,76,112,( )
A.256 B.257 C.258 D.259
正确答案:A.
答案解析:
72-63=3^2 除了最高位其他位的平方
76-72=2^2
112-76=6^2
?-112=12^2
-1,3,11,37,79,()
A.150 B151 C152 D153
正确答案:B
答案解析:
1*0^2-1=-1
2*1^2+1=3
3*2^2-1=11
4*3^2+1=37
5*4^2-1=79
6*5^2+1=151
15, 26, 38, ( ), 55
A.49 B.67 C.42 D.81
正确答案:B
答案解析:个位的平方加上十位等于第二个数。
1,13,36,69,104,()
A224 B119 C343 D459
正确答案 B
答案解析:
2^3-7=1
3^3-14=13
4^3-28=36
5^3-56=69
6^3-112=104
7^3-224=119
7,14,28,56,112,224 等比
27/7, 53/6, 79/5, 99/4, 107/3, 97/2, ()
A.51 B. 63 C.79 D.91
解析:
4-1/7
9-1/6
16-1/5
25-1/4
36-1/3
49-1/2
64-1/1=63
2,15,7,40,77,( )
A96 B126 C138 D156
15-2=13=4^2-3
40-7=33=6^2-3
138-77=61=8^2-3
-1,0,31,80,63,( ),5
A.35 B.24 C.26 D.37
0^7-1=-1
1^6-1=0
2^5-1=31
3^4-1=80
4^3-1=63
5^2-1=24
6^1-1=5
1,0,-1,-2,()
A^3-1=B
1^3-1=0
0^3-1=-1
-1^3-1=-2
-2^3-1=-9
1,5,14,32,( )
A. 93/2 B. 59 C. 67 D. 71
做差得到:4,9,18,35
2^2+0=4
2^3+1=9
2^4+2=18
2^5+3=35
32+35=67
-1,7,5,21,(),43
A19 B23 C25 D29
答案解析:
1^2-2=-1
2^2+3=7
3^2-4=5
4^2+5=21
5^2-6=19
6^2+7=43
0,6,78,(),15620
A.240 B.252 C.1020 D.7771
1^2-1
2^3-2
3^4-3
4^5-4=1020
5^6-5
0、6、23、48、121、170
2^2-4=0
3^2-3=6
5^2-2=23
7^2-1=48
11^2-0=121
13^2+1=170
3,3,6,3,33,()
A.-24, B.27 C.36 D.54
A^2=B+C
3^2=3+6
3^2=6+3
6^2=3+33
3^2=33-24
3,30,29,12,()
A.92 B.7 C.8 D.10
1^4+2
3^3+3
5^2+4
7^1+5
9^0+6
-1, 3, 3, 5, 37, ( )
A.87 B.327 C.729 D.735
(-2)^1+1=-1
(-1)^2+2=3
0^3+3=3
1^4+4=5
2^5+5=37
3^6+6=735
39、74、71、18、( )
2^5+7=39
3^4-7=74
4^3+7=71
5^2-7=18
6^1+7=13
8. -2 1 24 253 ()
A..3122 B.2956 C.89 D.43
1^1-3
2^2-3
3^3-3
4^4-3
5^5-3
9. 15 26 15 4 ()
A.3 B.2 C.5 D.0
2^4-1
3^3-1
4^2-1
5^1-1
6^0-1=0
15. 11 33 73 ( ) 231
A.113 B137 C.153 D.177
做差得到:22,40,64,94
再做差得到:18,24,30
2^3+3=11
3^3+6=33
4^3+9=73
5^3+12=137
6^3+15=231
29. -5 2 3 4 11()
A72 B30 C9 D2
-5-3=-8=-2^3
2-3=-1=-1^3
3-3=0=0^3
4-3=1=1^3
11-3=8=2^3
8. -2 1 24 253 ()
A..3122 B.2956 C.89 D.43
1^1-3
2^2-3
3^3-3
4^4-3
5^5-3
9. 15 26 15 4 ()
A.3 B.2 C.5 D.0
2^4-1
3^3-1
4^2-1
5^1-1
6^0-1=0
15. 11 33 73 ( ) 231
A.113 B137 C.153 D.177
做差得到:22,40,64,94
再做差得到:18,24,30
2^3+3=11
3^3+6=33
4^3+9=73
5^3+12=137
6^3+15=231
22. 3 4 5 11 14
A104 B105 C 106 D107
A^2=B+C
29. -5 2 3 4 11()
A72 B30 C9 D2
-5-3=-8=-2^3
2-3=-1=-1^3
3-3=0=0^3
4-3=1=1^3
11-3=8=2^3
13,15,35,63,80,( )
A 63 B 86 C 80 D99
(1+3)^2-1=15
(1+5)^2-1=35
(3+5)^2-1=63
(6+3)^2-1=80
(8+0)^2-1=63
-3, 9, 0, 81,( )
A.-81 B.128 C.156 D.250
A^2-B=C
0 ,6 ,78 ,() ,15620
A.240 B.252 C.1020 D.7771
1^2-1=0
2^3-2=6
3^4-3=78
4^5-4=1020
5^6-5=15620
3,-2,11,-12,()
A.9 B.-10 C.32 D.37
2^1+1=3
-2^2+2=-2
2^3+3=11
-2^4+4=-12
2^5+5=37
81,30,15,12,()
A.10 B.8 C.13 D.14
3^4+0=81
3^3+3=30
3^2+6=15
3^1+9=12
3^0+12=13
2,0, 0,4,6,()
A.3 B.6 C.12 D.24
-2×(-1)^5=2
-1×0^4=0
0×1^3=0
1×2^2=4
2×3^1=6
3×4^0=3
3,-2,11,-12,()
A 9 B -10 C 32 D 37
2^1+1=3
-2^2+2=-2
2^3+3=11
-2^4+4=-12
2^5+5=37
质数、合数
11,22,33,45,(),71
10+1=11
20+2=22
30+3=33
40+5=45
50+7=57
60+11=71
1,2,3,5,7,11 非合数列
8,10,13,18,25,( )
A 30 B 33 C 36 D 39
做差得到:2,3,5,7,11 质数列
25+11=36
24,48,72,90,( )
A 120 B 126 C 144 D 156
24=4*6
48=6*8
72=8*9
90=9*10
120=10*12
合数相乘
3,6,18,90,630,( )
A 6300 B 6930 C 6390 D 6960
*2 *3 *5 *7 *11 质数列
16,64,256,512,1024,( )
A 2048 B 4096 C 8192 D 12288
2^4,2^6,2^8,2^9,2^10,2^12 合数列
6,9,13,16,21,( )
A 25 B 26 C 27 D 28
6=2+4
9=3+6
13=5+8
16=7+9
21=11+10
25=13+12
质数+合数
21,34,45,52,57,(A)
A 60 B 61 C 62 D 63
做差得到:13,11,7,5,3 质数
3,11,23,39,57,77,(C)
A 89 B 98 C 101 D 105
做差得到:8,12,16,18,20,(24)
除以2得到:4,6,8,9,10,12 合数列
5, 13, 137, 23,( )
A、85 B、86 C、91 D、97
选 D 质数
7,10,16,22,( )
A. 28 B. 32 C. 34 D. 45
全部减1得到:6,9,15,21,()
2*3=6
3*3=9
5*3=15
7*3=21
11*3=33
33+1=34
2,3,5,7,11 质数列
0、6、23、48、121、170
2^2-4=0
3^2-3=6
5^2-2=23
7^2-1=48
11^2-0=121
13^2+1=170
5,14,34,76,()
A.142 B.163 C.169 D.176
解析:
2*3-1=5
3*5-1=14
5*7-1=34
7*11-1=76
11*13-1=142
5,6,8,10,14,()
A. 12 B. 14 C 16 D 18
解析:
解法一:
做差得到:1,2,2,4,(8) A*B=C 就是22(无答案)
解法二:
2+3=5
3+3=6
5+3=8
7+3=10
11+3=14
13+3=16
3 ,8,24, 48, 120 ( )
A.168 B.169 C.144 D.143
2^2-1=3
3^2-1=8
5^2-1=24
7^2-1=48
11^2-1=120
13^2-1=168
13. 10 21 44 65 ()
A.122 B.105 C.102 D.90
2*5
3*7
4*11
5*13
6*17=102
3,5,11,31,131,()
A677 B733 C684 D468
1!+2
2!+3
3!+5
4!+7
5!+11
6!+13
分数
24,33,63,( ),81
2/4,3/3,6/3,4/1,8/1
1/2,1,2,4,8
1/2 ,1/6 ,1/12 ,1/20,1/30 ,( )
A.1/42 B.1/40 C.11/42 D.1/50
分母:2,6,12,20,30,(42)
1*2=2
2*3=6
3*4=12
4*5=20
5*6=30
6*7=42
20/9,4/3,7/9,4/9,1/4,( )
A: 5/36 B: 1/6 C: 1/9 D: 1/144
80/36,48/36,28/36,16/36,9/36,5/36
分子是:80,48,28,16,9,5
48-80/4=28
28-48/4=16
16-28/4=9
9-16/4=5
3/5,3/5,2/3,3/4,()
A、17/20 B、19/20 C、21/25 D、23/25
3/5, 6/10, 10/15, 15/20, 21/25
4 3 8/5 9/7 10/11 ( )
A 11/13 B 12/13 C 1 D 3/4
4/1,6/2,8/5,9/7,10/11,(12/16)
4,6,8,9,10,(12) 合数列
2,2,5,7,11,(16)
5=2+2+1
7=2+5+0
11=7+5-1
16=7+11-2
3,4,17/3,( ),57/5
A 27/4 B 23/3 C 8 D 21/2
3/1,8/2,17/3,(32/4),57/5
3,8,17,(32),57
5 9 (15) 25
4 6 10
1,2/3,5/8,13/21,()
1/1,2/3,5/8,13/21,()
前一项的分子分母之和是后一项的分子,前一项的分母加上后一项的分子等于后一项的分母
12,28,318,432,()
A 2147 B750 C110 D350
1/2
2/8=1/4
3/18=1/6
4/32=1/8
5/50=1/10
0 2/3 8/3 4/15 24/5 ( )
A.1/5 B.2/3 C.3/5 D.34/5
分子分母相乘得到:0,6,24,60,120,()
1^3-1=0
2^3-2=6
3^3-3=24
4^3-4=60
5^3-5=120
6^3-6=210,应该是2/10=1/5
15,3,1,3/8 ,3/25 ,( )
A. 0 B. 2 C. 3/16 D. 3/4
15/1,12/4,9/9,6/16,3/25,0/36
3,7/4,1,1/2,()
9/3
7/4
5/5
3/6
1/7
1 32 116 2512 ( )
A 234 B13760 C1 D225
1/1 3/2 11/6 25/12 137/60
60/60 90/60 110/60 125/60 137/60
1,1,5/7,7/15,9/31,( B )
A21 B11/63 C4 D16/68
1/1,3/3,5/7,7/15,9/31,11/63
分子:1,3,5,7,9,11
分母:1,3,7,15,31,63
1*2+1=3 3*2+1=7 7*2+1=15 15*2+1=31 31*2+1=63
6,13/2,41/6,22/3, ( ),49/6,17/2
A23/3 B48/7 C6 D2
36/6,39/6,41/6,44/6,(46/6=23/3),49/6,51/6
36,39,41,44,46,49,51
3 2 3 2 3 2
差
5 ,5 ,14 ,38 ,87 ,( )
做差得:0,9,24,49,()
1^2-1=0
3^2=9
5^2-1=24
7^2=49
9^2-1=80
80+87=167
0,1,3,8,22,63,(185)
A163B174C185D190
做差得到:1,2,5,14,41,(122)
做差得到:1,3,9,27,81
-1.5,2 ,1,9,-1,( 25 )
3.5 -1 8 -10 26
-4.5 9 -18 36
-0.5-1=-1.5
1+1=2
-2+3=1
4+5=9
-8+7=-1
16+9=25
7,-2,-1,1,-5,-28,(-77 )
A -44 B -55 C -66 D -77
7,-2,-1,1,-5,-28,-77
9 -1 -2 6 23 49
10 1 -8 -17 -26
9 9 9 9
25. 1 3 4 3 -4 ()
A.-8 B9 C28 D-35
做差得到:2,1,-1,-7,-31
做差得到: 1,2,6,24
拆分
12 34 217 731 ( )
A 1137 B 1341 C 1743 D 1947
12=3*4
34=2*17
217=7*31
731=17*43
67 35 47 59 27 ( )
A 15 B 16 C 17 D 18
7-6=1
5-3=2
7-4=3
9-5=4
7-2=5
7-1=6
13,15,35,63,80,( )
A 63 B 86 C 80 D99
(1+3)^2-1=15
(1+5)^2-1=35
(3+5)^2-1=63
(6+3)^2-1=80
(8+0)^2-1=63
数字特性
3,1,4,1,5,9,2,()
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