数字推理120题答案解析
(1). 5,6,8,10,14,() A. 12 B. 14 C 16 D 18 5=2+3 6=3+3 8=5+3 10=7+3 14=11+3 16=13+3
(2). -11,-4,-3,-2,( ) A.-1, B.0 C.3 D.5 (-2)^3-3=-11 (-1)^3-3=-4 0^3-3=-3 1^3-3=-2 2^3-3=5
(3). 77,63,23,18,41,31,( ) 77+23=100=10^2 63+18=81=9^2 23+41=64=8^2 18+31=49=7^2 41+(-5)=36=6^2
(4) 1,7,19,37,( ) 7-1=6 19-7=12 37-19=18 61-37=24 等差数列。 或者是 1^2-0=1 3^2-2=7
5^2-6=19 7^2-12=37 9^2-20=61
0,2,6,12,20 差为2,4,6,8
(5) 2,6,10,18,32,( ) 6+(2+6)/2=10 10+(6+10)/2=18 18+(10+18)/2=32 32+(18+32)/2=57 (6) 2,2,3,5,14,( ) 2×2-1=3 2×3-1=5 3×5-1=14 5×14-1=69
A. -5, B.6 C.12 D.18 A. 57 B.61 C.66 D.80 A 57, B. 58 C.61 D.63 A. 50 B. 55 C.63 D.69 1
(7) 7/3,5/2,6/5,11,9/2,11/7, 8,( ) A 9/7 B 9 C 13/11 D 7/6 两两一组
(7+3)/(7-3)=10/4=5/2 (6+5)/(6-5)=11/1 (9+2)/(9-2)=11/7 8=8/1=(8+1)/(8-1)=9/7
(8) 0,10,24,68,120,( ) A 196 B.210 C 216 D 222 1^3-1=0 2^3+2=10 3^3-3=24 4^3+4=68 5^3-5=120
6^3+6=222
(9) (9,2,7),(4,3,8),(49,12,31),(0,17,?) A.34 B.51 C.49 D. 47 9开2次方+2×2=7 4开2次方+3×2=8 49开2次方+12×2=31 0开2次方+17×2=34
(10) 21,17,22,21,31,37,( ) A.48 B.53 C.56 D 61 22-21=1 21-17=4
31-22=9 37-21=16 56-31=25
(11) 2,12,23,52,() A 61 B 74 C 76 D 82 2=0+2 1+2=3
2+3=5 5+2=7 7+4=11
(12) 1,1,2,6,8,11,() A 13 B 17 C 18 D 20 1+1+2=4 1+2+6=9 2+6+8=16
6+8+11=25 8+11+17=36
(13) 3,3,9,33,93,() A 210 B 213 C 216 D 222 3-3=0=1^3-1 9-3=6=2^3-2 33-9=24=3^3-3 93-33=60=4^3-4
213-93=120=5^3-5
(14) (7,28,4),(3,16,16),(10,20,10),(21,?,9) A 108 B 63 C 41 D 27 (7×4)/1=28
2
(3×16)/3=16
(10×10)/5=20 (21×9)/7=27
(15) 4,11,17,20,15,1,() A -24, B -16 C 16 D 24 (11+17)-2*4=20 (17+20)-2*11=15 (20+15)-17*2=1
(15+1)-20*2=-24
(16) 6,9,15,21,33,( ) A. 51 B.48 C.42 D.39 6=2×3 9=3×3 15=5×3 21=7×3 33=11×3 39=13×3
(17) 2,3,9,36,360,( ) (2+1)*3=9 (3+1)*9=36 (9+1)*36=360 (36+1)*360=13320
(18) (14,13,3), (22,25,7), (36,?,23) 14/2+3*2=13 22/2+7*2=25 36/2+23*2=64
(19) 5,32,81,128,125,( ) 5=5×1^3 32=4×2^3 81=3×3^3 128=2×4^3 125=1×5^3
0=0×6^3
(20) 0,7,8,63,24,( ) 1^2-1=0 2^3-1=7 3*2-1=8 4*3-1=63 5^2-1=24 6^3-1=215
(21). 2,6,12,22,36,( ) 6-2=2*2 12-6=2*3 22-12=2*5 36-22=2*7
A.13320 B.13322 C.12320 D12322 A.56 B.64 C.67 D.72 A. 0 B.216 C.144 D.189 A. 0 B.255 C.215 D.323 A.48 B.58 C.64 D.68 3
58-36=2*11
(22). 4,8,32,128,( ) A. 256 B.512 C 1024 D.2048 2^2=4 2^3=8 2^5=32 2^7=128 2^11=2048
(23). 7,9,20,62,( ) A. 194 B.198 C.102 D.250 7*1+2=9 9*2+2=20 20*3+2=62
62*4+2=250
(24). (12,13,7),(23,31,9),(43,12,10),(37,16,?) A.45 B.32 C.19 D.13 1*1+2*3=7 2*3+3*1=9 4*1+3*2=10 3*1+7*6=45
(25). 3,1,12,16,30,100,39,( ) A. 177 B.189 C.98 D.169 (3/3)^2=1 (12/3)^2=16 (30/3)^2=100 (39/3)^2=169
(26) 11,24,35,42,47,( ) A.50 B.51 C.52 D.53 24-11=13 35-24=11 42-35=7 47-42=5 50-47=3
(27) 13,7,8,17,43,( ) A. 67 B.112 C.84 D.126 7×3-13=8 8×3-7=17 17×3-8=43 43×3-17=112
(28) 3,11/5,15/7,2,21/11,( ) A.23/11 B.23/13 C.21/13 D.25/14 6/2, 11/5, 15/7, 18/9, 21/11, 6-2=4
4
11-5=6
15-7=8 18-9=9 21-11=10
选项符合分子-分母是合数序列的 12 23-11=12 选A
(29) (12,7,9),(46,55,1),(12,86,8),(23,13,?) A.4 B.6 C.8 D.10 2+7=9 6+5=11 2+6=8 3+3=6
(30) 2,6,30,60,130, ( ) A.180 B.200 C.210 D.240 1^3+1=2 2^3-2=6 3^3+3=30 4^3-4=60 5^3+5=130
6^3-6=210
(31) 3, 4, 21, 75, 288,() A 900 B 1089 C 1098 D 1200 (3+4)×3=21 (4+21)×3=75 (21+75)×3=288 (75+288)×3=1089
(32) 7,5,2,3,-1,() A.0 B.2 C 4 D -4 A-C=B 7-2=5 5-3=2
2-(-1)=3 3-4=-1
(33) (2,3,13),(3,2,15),(4,5,?) A.19 B.31 C 40 D 24 2^2+3*3=13 3^2+2*3=15 4^2+5*3=31
(34) 0,1,2,9,44,() A.121 B.196 C.265 D 300
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