Logical Reasoning - Number and Letter Series
56. Find the missing number in the following series.
13, 32, 24, 43, 35, ?, 46, 65, 57, 76
- Option : C
- Explanation : The given sequence is a combination of two series.
Ist Series: 13, 24, 35, 46 and 57
IInd Series: 32, 43, ?, 65 and 76
The pattern in both series is + 11. Hence, the missing term = 43 + 11 = 54.
58. Find the wrong number in this sequence.
10, 26, 74, 218, 654, 1,946
- Option : D
- Explanation : 10 × 3 − 4 = 26
26 × 3 − 4 = 74
74 × 3 − 4 = 218
218 × 3 − 4 = 650
650 × 3 − 4 = 1946
59. Find the missing letters in the following series.
QAR, RAS, SAT, TAU, __________
- Option : A
- Explanation : The third letter is repeated as the first letter of the next segment. The middle letter, A, remains static. The third letters are in alphabetical order beginning with R.
60. Find the missing letters in the following series.
FTG, GTF, HTI, ITH, __________
- Option : A
- Explanation : The middle letter T is fixed. The first and third letters are swapping their position in second and fourth terms. The first letters are in alphabetical order: F, G, H, I, and J. The missing segment begins with a new letter J.
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