Aptitude SeriesPage 7
49. | Find the wrong number in this series.
2, 3, 10, 40, 172, 885, 5346
| | (a)40 | | (b)172 | | (c)885 | | (d)5346 |
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Answer is: A(2 x 1) + 1 = 3
(3 x 2) + 4 = 10
(10 x 3) + 9 = 39
So, 40 is wrong.
50. | Find the wrong number.
16, 4, 2, 1.5, 1.75, 1.875
| | (a)2 | | (b)1.5 | | (c)1.75 | | (d)1.875 |
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Answer is: C16 x 0.25 = 4
4 x 0.50 = 2
2 x 0.75 = 1.5
1.5 x 1 = 1.5
So, 1.75 is wrong
51. | Find the missing number.
abb_baa_a_bab_aba
| | (a)aabb | | (b)abab | | (c)abba | | (d)baab |
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Answer is: Ctwo series are increasing abba and baab
52. | Find the missing number.
bca_b_aabc_a_caa
| | (a)cbaa | | (b)bcaa | | (c)aabc | | (d)acba |
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Answer is: Bbcaa, is repeating
53. | | Find the missing number.
_stt_tt_tts_
| | (a)ttss | | (b)tsts | | (c)tsst | | (d)stst |
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Answer is: Ctst, is repeating
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