Directions:(1-5) Find the wrong term in the series given below.
1. 413, 425, 465, 585, 787, 1065
View Answer Ans:4 The next term is obtained by adding the number to the product of its digits.
413 + 12 = 425
425 + 40 = 465
465 + 120 = 585
585 + 200 = 785
785 + 280 = 1065
2. 40, 60.0, 92.0, 135.0, 202.5, 303.75
View Answer Ans:4 The pattern is as follows:
40 x 1.5 = 60.0
60.0 x 1.5 = 90.0
90.0 x 1.5 = 135.0
135.0 x 1.5 = 202.5
202.5 x 1.5 = 303.75
3. 63, 593, 994, 1284, 1483, 1603
View Answer Ans:5 The pattern is as follows:
63 + 232 + 1 = 593
593 + 202 + 1 = 994
994 + 172 + 1 = 1284
1284 + 142 + 1 = 1481
1481 + 112 + 1 = 1603
4. 120, 136, 130, 132, 130, 131
View Answer Ans:4 From the 3rd number, each successive term is average of previous 2 terms:
(120 + 136)/2 = 128
(136 + 128)/2 = 132
(128 + 132)/2 = 130
(132 + 130)/2 = 131
5. 332, 336, 374, 376, 412, 416
View Answer Ans:3 The next term is obtained by adding the number to the square of the last digit of the previous number.
332 + 22 = 336
336 + 62 = 372
372 + 22 = 376
376 + 62 = 412
412 + 22 = 416
Directions:(6-10) Find the next term in the series.
6. 538, 658, 898, 1474, 1586, ?
View Answer Ans:3 The next term is obtained by adding the number to the product of its digits.
538 + 5 x 3 x 8 = 658
658 + 6 x 5 x 8 = 898
898 + 8 x 9 x 8 = 1474
1474 + 1 x 4 x 7 x 4 = 1586
1586 + 1 x 5 x 8 x 6 = 1826
7. 15, 49, 201, 1011, 6073, ?
View Answer Ans:2 The pattern is as follows:
(15 x 3) + 4 = 49
(49 x 4) + 5 = 201
(201 x 5) + 6 = 1011
(1011 x 6) + 7 = 6073
(6073 x 7) + 8 = 42519
8. 26, 22, 36, 92, 336, ?
View Answer Ans:3 The pattern is as follows:
(26 x 1) – 4 = 22
(22 x 2) – 8 = 36
(36 x 3) – 16 = 92
(92 x 4) – 32 = 336
(336 x 5) – 64 = 1616
9. 341, 559, 855, 1241, 1729, ?
View Answer Ans:1 The pattern is as follows:
53 + 63 = 341
63 + 73 = 559
73 + 83 = 855
83 + 93 = 1241
93 + 103 = 1729
103 + 113 = 2331
10. 29, 31, 36, 47, 64, ?
View Answer Ans:1 The pattern adds alternate prime numbers to the previous term:
29 + 2 = 31
31 + 5 = 36
36 + 11 = 47
47 + 17 = 64
64 + 23 = 87
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