Directions:(1-5) Find the wrong term in the series given below.
1. 51, 60, 79, 134, 215, 336
View Answer Ans:2 The pattern is as follows:
51 + 32 = 60
60 + 52 = 85
85 + 72 = 134
134 + 92 = 215
215 + 112 = 336
2. 151, 182, 251, 386, 605, 956
View Answer Ans:5 The pattern is as follows:
151 + 33 + 4 = 182
182 + 43 + 5 = 251
251 + 53 + 6 = 382
382 + 63 + 7 = 605
605 + 73 + 8 = 956
3. 2, 3, 60, 420, 3360, 30240
View Answer Ans:4 The pattern is as follows:
2 x 5 = 10
10 x 6 = 60
60 x 7 = 420
420 x 8 = 3360
3360 x 9 = 30240
4. 24, 24, 33, 39, 51, 57
View Answer Ans:2 The next number is obtained by adding sum of digits of the previous number:
24 + 2 + 4 = 30
30 + 3 + 0 = 33
33 + 3 + 3 = 39
39 + 3 + 9 = 51
51 + 5 + 1 = 57
5. 38, 52, 94, 164, 268, 388
View Answer Ans:5 The pattern is as follows:
38 + 14 x 1 = 52
52 + 14 x 3 = 94
94 + 14 x 5 = 164
164 + 14 x 7 = 262
262 + 14 x 9 = 388
Directions:(6-10) What should come in place of the question mark (?) in the following number series?
6. 15, 17, 22, 33, 50, ?
View Answer Ans:2 The pattern adds alternate prime numbers to the previous term:
15 + 2 = 17
17 + 5 = 22
22 + 11 = 33
33 + 17 = 50
50 + 23 = 73
7. 7529536, 537824, 38416, 2744, 196, ?
View Answer Ans:5 The pattern is as follows:
7529536/14 = 537824
537824/14 = 38416
38416/14 = 2744
2744/14 = 196
196/14 = 14
8.15.21, 16.81, 18.49, 20.25, ?
View Answer Ans:2 The pattern is (3.9)2 , (4.1)2 , (4.3)2 , (4.5)2 , (4.7)2
9. 5, 5, 12, 38, 101, ?
View Answer Ans:5 The pattern is, 5 + (13 – 1) = 5, 5 + (23 – 1) = 12, 12 + (33 – 1) = 38, 38 + (43 – 1) = 101, 101 + (53 – 1) = 225
10. 17, 27, 39, 53, ?
View Answer Ans:1 The pattern is 3×5+2=17, 4×6+3=27, 5×7+4=39, 6×8+5=53, 7×9+6=69
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