Directions:(1-5) Find the next term in the series.
1. 1328, 996, 724, 506, 336, ?
View Answer Ans: 2 The pattern is as follows: 113 – 3 = 1328 103 – 4 = 996 93 – 5 = 724 83 – 6 = 506 73 – 7 = 336 63 – 8 = 208
2. 16, 24, 34, 46, 60, ?
View Answer Ans: 5 The pattern is as follows: 2 x 4 + 8 = 16 3 x 5 + 9 = 24 4 x 6 + 10 = 34 5 x 7 + 11 = 46 6 x 8 + 12 = 60 7 x 9 + 13 = 76
3. 361, 432, 505, 584, 667, ?
View Answer Ans: 2 Consecutive prime numbers are added to the number: 361 + 71 = 432 432 + 73 = 505 505 + 79 = 584 584 + 83 = 667 667 + 89 = 756
4. 492, 448, 406, 366, 328, ?
View Answer Ans: 1 The pattern is as follows: 222 + 8 = 492| 212 + 7 = 448 202 + 6 = 406 192 + 5 = 366 182 + 4 = 328 172 + 3 = 292
5. 6, 20, 48, 90, 146, ?
View Answer Ans: 1 The pattern is as follows: 6 + 14 x 1 = 20 20 + 14 x 2 = 48 48 + 14 x 3 = 90 90 + 14 x 4 = 146 146 + 14 x 5 = 216
Directions:(6-10) What should come in place of the question mark (?) in the following number series?
6. 4, 6, 10, 14, 22, 26, ?
View Answer Ans: 1 The series is 2×2, 2×3, 2×5, 2×7, 2×11, 2×13, 2×17. (2,3,5,7,11,13,17 are prime numbers.)
7. 8, 20, 70, 315, ?
View Answer Ans: 4 The pattern is: 8 X 2.5 = 20, 20 X 3.5 = 70, 70 X 4.5 = 315, 315 X 5.5 = 1732.5
8. 69, 72, 76, 77, 83, 82, 90 ?
View Answer Ans: 2 The numbers at odd positions increase by 7 and the numbers at even positions increase by 5. The number is 82+5 = 87.
9. 11, 10, 18, 51, 200, ?
View Answer Ans: 4 (11-1)x1 = 10, (10-1)x2 = 18, (18-1)x3 = 51, (51-1)x4 = 200, (200-1)x5 = 995
10. 4, 200, 369, 513, 634, ?,
View Answer Ans: 3 4+142 = 200, 200+132 = 369, 369+122 = 513, 513+112 = 634, 634+102 = 734
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