Number Series

Sort Difficulty Level: Entry Level | Moderate | Difficult
AZ, CX, EV, ?
HT
no
HU
no
GS
no
GT
yes
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The number of letters skipped in between adjacent letters in a series is 5. Which of the following series observes this rule ?
CIOUA
yes
CINUA
no
CIOTA
no
CIOUZ
no
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Which number is wrong in the given series?
1, 9, 25, 50, 81
1
no
25
no
50
yes
81
no
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ZCBA, YFED, XIHG, ?
WLKM
no
WJKL
no
WKLJ
no
WLKJ
yes
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AGMSY, CIOUA, EKQWC,…?… IOUAG, KQWCI
GMSYE
yes
FMSYE
no
GNSYD
no
FMYES
no
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975, 864, 753, 642,…?…
431
no
314
no
531
yes
532
no
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8, 24, 12,…?…18,54
28
no
36
yes
46
no
38
no
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4, 5, 8, 27, 104, ?
210
no
315
no
125
no
525
yes
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10, 18, 34, ? , 130, 258
23
no
60
no
68
no
66
yes
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Which one set of letters when sequentially placed at the gaps in the given letter series shall complete the series?
_b_da_ _bdd_a
Bdaba
yes
Dbabd
no
Bbada
no
Aabbb
no
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