Directions (Q. 1-10): Find the next number in the place of question mark (?) in the following number series.
1. 4 , 13, 54, 273, 1642, ?
1) 10432
2) 10968
3) 11120
4) 11499
5) 11562
2. 3, 14, 66, 312, 1640, ?
1) 9950
2) 9960
3) 9970
4) 9980
5) 9990
3. 3, 8, 16, 15, 42, 29, 81, ?
1) 50
2) 54
3) 72
4) 78
5) 96
4. 6, 42, 114, 258, 546, ?
1) 1116
2) 1118
3) 1120
4) 1122
5) 1124
5. 484, 729, 1024, 1369, 1764, ?
1) 2204
2) 2206
3) 2209
4) 2212
5) 2215
6. 27, 76, 272, 713 , 1497, ?
1) 2720
2) 2721
3) 2722
4) 2723
5) 2724
7. 68, 216, 444, 752 , 1140 , ?
1) 1600
2) 1602
3) 1604
4) 1606
5) 1608
8. 7, 14, 35, 78 , 151 , 262, ?
1) 417
2) 419
3) 421
4) 423
5) 425
9. 3, 35, 99, 195, 323, 483, ?
1) 645
2) 655
3) 665
4) 675
5) 685
10. 5 , 7, 19, 49 , 105 , 195, ?
1) 323
2) 325
3) 327
4) 329
5) 331
Answers:1 4
2. 2
3. 1
4. 4
5. 3
6. 3
7.5
8. 2
9. 4
10. 3
Directions (Q. 1-50): Find the next number in the place of question mark (?) in the following number series.
1) 11, 19, 65, 259, 1161, ?
a) 3081 b) 6021 c) 4421 d) 5041 e) None of these
2) 8, 50, 295, ? , 5881, 17641
a) 1251 b) 1471 c) 1081 d) 1391 e) None of these
3) 10, 15, 35, 82.5, ? , 562.5
a) 215 b) 210 c) 205 d) 220 e) None of these
4) 1000, 501, 170, 47.5, ?
a) 14.5 b) 15 c) 16 d) 16.5 e) None of these
5) 10, 11, 19, 46, ?, 235
a) 200 b) 110 c) 105 d) 64 e) None of these
6) 1290, 645, 430, ? , 258, 215
a) 322.5 b) 356 c) 334d) 342.5 e) 308
7) 218, 270, 333, 409, 500, ?
a) 712 b) 686 c) 730 d) 608 e) 654
8) 52, 274, 404, 472, 502, ?
a) 536 b) 512 c) 554 d) 580 e) 608
9) 11, 22, 66, ? , 2310, 25410
a) 360 b) 420 c) 330 d) 450 e) 480
10) 126, 64, 72, 171, ? , 6109
a) 652 b) 576 c) 924 d) 1032 e) 748
11) 1386, 1386, 693, 231, 57.75, ?
a) 18.25 b) 11.55 c) 24.65 d) 15.45 e) 27.35
12) 355, 382, 318, 443, ? , 570
a) 278 b) 312 c) 356d) 227 e) 334
13) 56, 28, 42, 105, ? , 1653.75
a) 367.5 b) 255.5 c) 412.25 d) 433.75 e) 289.25
14) 12, 25, 84, 361, ? , 11205
a) 1568 b) 1672 c) 1854 d) 1744 e) 2056
15) 150, 934, 258, 834, 350, ?
a) 734 b) 750 c) 776 d) 712 e) 728
16) 112, 168, 226, 290, 366, ?
a) 546 b) 438 c) 570 d) 462 e) 524
17) 789, 823, 861, 907, 969, 1063, ?
a) 1195 b) 1277 c) 1221 d) 1313 e) 1354
18) 75000, 3000, 150, ? , 1, 0.2
a) 15 b) 10 c) 20 d) 25e) 30
19) 672, 348, 184, 100, 56, ?
a) 28 b) 36 c) 32 d) 44 e) 16
20) 273, ?, 281, 293, 313, 343
a) 275 b) 278 c) 344 d) 284 e) 295
21) 8748, 2916, 972, 324, ? , 36
a) 184 b) 206 c) 108 d) 142 e) 120
22) 72, 37, 38, 58, 117, 293.5, ?
a) 905.75 b) 827.5 c) 662.25 d) 881.5 e) 775
23) 582, 700, 827, 979, ? , 1462
a) 1218 b) 1154 c) 1180 d) 1236 e) 1092
24) 340, 2040, 408, 1632, 544, ?
a) 1430 b) 1172 c) 1328 d) 1088 e) 1254
25) 456, 228, 228, 456, 1824, ?
a) 14592 b) 9256 c) 12278 d) 13714 e) 10422
26) 17, 20, 46, 147, 600, ?
a) 2740 b) 2575 c) 3015 d) 3260 e) 3420
27) 675, 674, 336, 111, 26.75, ?
a) 12.55 b) 4.35 c) 7.45 d) 5.25 e) 10.65
28) 208, 104, 156, 390, ? , 6142.5
a) 1450 b) 2175 c) 1365 d) 2890 e) 3345
29) 45, 48, 102, 315, 1272, ?
a) 5125 b) 5530 c) 6145 d) 6375 e) 4560
30) 42, 57, 75, 99, 132, ?
a) 181 b) 174 c) 177 d) 149 e) 153
31) 2486, 2365, 2806, 1845, 3526, ?
a) 925 b) 845 c) 1025 d) 625 e) 125
32) 36, 39, 51, ? , 126, 201
a) 72 b) 87 c) 95 d) 102 e) 78
33) 11, 13, 55, 195, ? , 6017
a) 895 b) 1011 c) 942 d) 737 e) 698
34) 78, 56, 84, 62, ? , 68
a) 98 b) 90 c) 92 d) 94 e) 96
35) 1156, 1159, 1171, 1198, 1246, ?
a) 1378 b) 1356 c) 1321 d) 1392 e) 1415
36) 12, 16, 41, 139, 581, ?
a) 2941 b) 1853 c) 1527 d) 2675 e) 3155
37) 745, 823, 905, 995, 1097, ?
a) 1215 b) 1372 c) 1348 d) 1483 e) 1289
38) 113, 56, 57, 84, 170, ?
a) 325.5 b) 387 c) 422.5 d) 516 e) 458.5
39) 1172, 1177, 1202, 1327, ?
a) 1564 b) 1952 c) 2348 d) 2696 e) None of these
40) 288, 156, 88, 52, 32, ?
a) 36 b) 32 c) 24 d) 28 e) 20
41) 8, 128, 648, ? , 5000, 10368
a) 2048 b) 2356 c) 3574 d) 3680 e) 1752
42) 32, 545, 887, 1104, 1228, ? , 1319
a) 1254 b) 1305 c) 1293 d) 1278 e) 1236
43) 154, 151, 146, 137, 120, ?
a) 76 b) 65 c) 94 d) 87 e) 102
44) 8, 28, 80, 244, 728, ?
a) 3256 b) 3780 c) 4224 d) 4735 e) 2188
45) 8, 10, 24, 78, 320, ? , 9672
a) 1230 b) 2780 c) 1610 d) 3520 e) 3890
46) 2500, 500, 200, 160, 256, ?
a) 819.2 b) 924.4 c) 728.6 d) 633 e) 1025
47) 156, 162, 174, 192, ? , 246
a) 232 b) 224 c) 208 d) 216 e) 238
48) 224, 113, 121, 269, 1140, ?
a) 9245 b) 8170 c) 7265 d) 9540e) 8360
49) 52, 100, 150, 203, 261, 326, ?
a) 510 b) 625 c) 402 d) 374 e) 458
50) 118, 328, 664, 1168, ?
a) 1956 b) 2012 c) 1888 d) 2374 e) 3247
Answers:
1) Answer: b) 11 x 1 + 23 = 19 19 x 2 + 33 = 65 65 x 3 + 43 = 259 259 x 4 + 53 = 1161 1161 x 5 + 63 = 6021
2) Answer: b) 8 x 7 – 6 = 50 50 x 6 – 5 = 295 295 x 5 – 4 = 1471 1471 x 4 – 3 = 5881 5881 x 3 – 2 = 17641
3) Answer: c) 10 x 0.5 + 10 = 15 15 x 1 + 20 = 35 35 x 1.5 + 30 = 82.5 82.5 x 2 + 40 = 205 205 x 2.5 + 50 = 562.5 4) Answer: d) 1000 ÷ 2 + 1 = 501 501 ÷ 3 + 3 = 170 170 ÷ 4 + 5 = 47.5 47.5 ÷ 5 + 7 = 16.5
5) Answer: b) 10 + 13 = 11 11 + 23 = 19 19 + 33 = 46 46 + 43 = 110 110 + 53 = 235
6) Answer: a) 1290 * (1/2) = 645 645 * (2/3) = 430 430 * (3/4) = 322.5 322.5 * (4/5) = 258 258 * (5/6) = 215
7) Answer: d) The difference of difference is, 11, 13, 15, 17,...
8) Answer: b) 52 + 63 + 6 = 274 274 + 53 + 5 = 404 404 + 43 + 4 = 472 472 + 33 + 3 = 502 502 + 23 + 2 = 512
9) Answer: c) 11 * 2 = 22 22 * 3 = 66 66 * 5 = 330 330 * 7 = 2310 2310 * 11 = 25410
10) Answer: e) 126 * 0.5 + 13 = 64 64 * 1 + 23 = 72 72 * 2 + 33 = 171 171 * 4 + 43 = 748 748 * 8 + 53 = 6109
11) Answer: b) 1386 ÷ 1 = 1386 1386 ÷ 2 = 693 693 ÷ 3 = 231 231 ÷ 4 = 57.75 57.75 ÷ 5 = 11.55
12) Answer: d) The difference is, +33 , -4 3 , +53 , -6 3 , +73 ,…. The answer is, 227
13) Answer: a) 56 * ½ = 28 28 * 3/2 = 42 42 * 5/2 = 105 105 * 7/2 = 367.5 367.5 * 9/2 = 1653.75 The answer is, 367.5
14) Answer: c) 12 * 2 + 12 = 25 25 * 3 + 32 = 84 84 * 4 + 52 = 361 361 * 5 + 7 2 = 1854 1854 * 6 + 92 = 11205 The answer is, 1854
15) Answer: b) 150 + 282 = 934 934 – 262 = 258 258 + 242 = 834 834 – 222 = 350 350 + 202 = 750 The answer is, 750
16) Answer: d) The difference of difference is, 12 + 1, 22 + 2, 32 + 3, 42 + 4,… (Or) The difference of difference is, (1*2), (2*3), (3*4), (4*5),…. The answer is, 462
17) Answer: c) The difference of difference is, *2 The answer is, 1221
18) Answer: b) 75000 ÷ 25 = 3000 3000 ÷ 20 = 150 150 ÷ 15 = 10 10 ÷ 10 = 1 1 ÷ 5 = 0.2 The answer is, 10
19) Answer: c) 672 ÷ 2 + 12 = 348 348 ÷ 2 + 10 = 184 184 ÷ 2 + 8 = 100 100 ÷ 2 + 6 = 56 56 ÷ 2 + 4 = 32 The answer is, 32
20) Answer: a)
21) Answer: c) 8748 ÷ 3 = 2916 2916 ÷ 3 = 972972 ÷ 3 = 324 324 ÷ 3 = 108 108 ÷ 3 = 36 The answer is, 108
22) Answer: d) 72 * 0.5 + 1 = 37 37 * 1 + 1 = 38 38 * 1.5 + 1 = 58 58 * 2 + 1 = 117 117 * 2.5 + 1 = 293.5 293.5 * 3 + 1 = 881.5 The answer is, 881.5
23) Answer: c) The difference of difference is, 32 , 52 , 72 , 92 ,.... The answer is, 1180
24) Answer: d) 340 * 6 = 2040 2040 ÷ 5 = 408 408 * 4 = 1632 1632 ÷ 3 = 544 544 * 2 = 1088 The answer is, 1088
25) Answer: a) 456 * ½ = 228 228 * 1 = 228 228 * 2 = 456 456 * 4 = 1824 1824 * 8 = 14952 The answer is, 14592
26) Answer: c) 17 * 1+ 3 = 20 20 * 2 + 6 = 46 46 * 3 + 9 = 147 147 * 4 + 12 = 600
600 * 5 + 15 = 3015 The pattern is, *1 + 3, *2 + 6, *3 + 9, *4 + 12, *5 + 15,... The answer is, 3015
27) Answer: b) (675 – 1)/1 = 674 (674 – 2)/2 = 336 (336 – 3)/3 = 111 (111 – 4)/4 = 26.75 (26.75 – 5)/5 = 4.35 The answer is, 4.35
28) Answer: c) 208 * 0.5 = 104 104 * 1.5 = 156 156 * 2.5 = 390 390 * 3.5 = 1365 1365 * 4.5 = 6142.5 The answer is, 1365
29) Answer: d) 45 * 1 + 3 = 48 48 * 2 + 6 = 106 102 * 3 + 9 = 315 315 * 4 + 12 = 1272 1272 * 5 + 15 = 6375 The answer is, 6375
30) Answer: c) The difference of difference in the above series is 3, 6, 9, 12, 15…. The answer is 177
31) Answer: a) 2486 – 121 = 2365 2365 + 441 = 2806 2806 – 961 = 1845 1845 + 1681 = 3526
3526 – 2601 = 925 The difference is, - 112 , + 212 , - 312 , + 412 , - 512 ,…… The answer is 925
32) Answer: e) 36 + (1 * 3) = 39 39 + (2 * 6) = 51 51 + (3 * 9) = 78 78 + (4 * 12) = 126 126 + (5 * 15) = 201 The answer is, 78 (Or) The difference is, 12 × 3, 22 × 3, 32 × 3, 42 × 3, 52 × 3 ,…. The answer is, 78
33) Answer: b) 11 * 2 – 3 2 = 13 13 * 3 + 42 = 55 55 * 4 – 5 2 = 195 195 * 5 + 62 = 1011 1011 * 6 – 7 2 = 6017 The pattern is, *2 – 3 2 , *3 + 42 , *4 – 5 2 , *5 + 62 , *6 – 7 2 ,.. The answer is, 1011
34) Answer: b) 78 – 22 = 56 56 + 28 = 84 84 – 22 = 62 62 + 28 = 90 90 – 22 = 68 (Or) The alternative difference is, + 6
35) Answer: c) 1156 + (1 * 3) = 1159 1159 + (2 * 6) = 1171 1171 + (3 * 9) = 1198 1198 + (4 * 12) = 1246 1246 + (5 * 15) = 1321 (Or) The difference of difference is, 6, 6, 6,…
36) Answer: a) 12 * 1 + 22 = 16 16 * 2 + 32 = 41 41 * 3 + 42 = 139 139 * 4 + 52 = 581 581 * 5 + 62 = 2941 The answer is, 2941
37) Answer: a) The difference of difference is, 4, 8, 12, 16,.... The answer is, 1215
38) Answer: c) 113 * 0.5 - 0.5 = 56 56 * 1 + 1 = 57 57 * 1.5 – 1.5 = 84 84 * 2 + 2 = 170 170 * 2.5 - 2.5 = 422.5 The answer is, 422.5
39) Answer: b) 1172 + 51 = 1177 1177 + 52 = 1202 1202 + 53 = 1327 1327 + 54 = 1952 The answer is, 1952
40) Answer: e) 288 ÷ 2 + 12 = 156 156 ÷ 2 + 10 = 88 88 ÷ 2 + 8 = 52 52 ÷ 2 + 6 = 32 32 ÷ 2 + 4 = 20 The answer is, 20 41) Answer: a) 1 * 23 = 8, 2 * 43 = 128, 3 * 63 = 648, 4 * 83 = 2048, 5 * 103 = 5000, 6 * 123 = 10368 The answer is, 2048
42) Answer: c) The difference is, (83 +1), (73 -1), (63 +1), (53 -1), (43 +1),… The answer is, 1293
43) Answer: d) 154 - (21 + 1) = 151 151 - (22 + 1) = 146 146 - (23 + 1) = 137 137 - (24 + 1) = 120 120 - (25 + 1) = 87 The answer is, 87
44) Answer: e) 8 * 3 + 4 = 28 28 * 3 – 4 = 80 80 * 3 + 4 = 244 244 * 3 – 4 = 728 728 * 3 + 4 = 2188 The answer is, 2188
45) Answer: c) 8 * 1 + 2 = 10 10 * 2 + 4 = 24 24 * 3 + 6 = 78 78 * 4 + 8 = 320 320 * 5 + 10 = 1610 1610 * 6 + 12 = 9672 The answer is, 1610
46) Answer: a) 2500 * 1/5 = 500 500 * 2/5 = 200 200 * 4/5 = 160 160 * 8/5 = 256 256 * 16/5 = 819.2 The answer is, 819.2
47) Answer: d) 156 + (1 * 6) = 162 162 + (2 * 6) = 174 174 + (3 * 6) = 192 192 + (4 * 6) = 216 216 + (5 * 6) = 246 The answer is, 216
48) Answer: a) 224 * 0.5 + 13 = 113 113 * 1 + 23 = 121 121 * 2 + 33 = 269 269 * 4 + 43 = 1140 1140 * 8 + 53 = 9245
49) Answer: c) The difference of difference is, prime numbers starts with 2 (ie., 2, 3, 5, 7, 11,..) The answer is, 402
50) Answer: c) 118 + 63 – 6 = 328 328 + 73 – 7 = 664 664 + 83 – 8 = 11681168 + 93 – 9 = 1888 The answer is, 1888
