Find out the wrong term from the alternatives to complete the series.
Q. 325, 259, 202, 160, 127, 105, 94
The sequence is 66, 55, 44, 33, 22, 11.
So, 202 is wrong. The correct term is 204.
Find out the wrong term from the alternatives to complete the series.
Q. 105, 85, 60, 30, 0, 45, 90
The sequence is 20, 25, 30, 35, 40, 45. So, 0 is wrong.
Find out the wrong term from the alternatives to complete the series.
196, 169, 144, 121, 100, 80, 64
The sequence is (14)^{2}, (13)^{2}, (12)^{2}, (11)^{2}, (10)^{2}, (9)^{2}, (8)^{2}.
So, 80 is wrong. Since 9^{2} = 81
Find out the wrong term from the alternatives to complete the series.
Q. 8, 14, 26, 48, 98, 194, 386
Each term, except 48 in the series is less than twice the preceding term by 2. The correct term is 50.
Find out the wrong term from the alternatives to complete the series.
Q. 8, 13, 21, 32, 47, 63, 83
The sequence is +5, +8, +11, +14, +17, +20. However, 47 breaks this sequence. The correct term is 46.
Choose the alternative that will complete the series.
Q. D4, F6, H8, J10, ?, ?
The letters in the series are alternate and the numbers indicate their position in the alphabets from the beginning.
Choose the alternative that will complete the series.
Q. Y, V, S, P, M, ?
There is a gap of two letters between any two consecutive terms of the series.
Choose the alternative that will complete the series.
Q. OTE PUF QVG RWH ?
The first letters of the terms are in alphabetical order , and so are the second and third letters.
Choose the alternative that will complete the series.
Q. CE GI KM OQ ?
The letters of each term are alternate and also the last letter of each term and the first letter of the next term are alternate.
Choose the alternative that will complete the series.
Q. ab – bbc – c – ab – ab – b
The series is aaab/aabb/abbb/aaab/aabb.
Choose the alternative that will complete the series.
Q. b – ac – cc – cb – ab – ac
The series is baac/accb/cbba/baac.
Choose the alternative that will complete the series.
Q. ccb – c – bbc – b – cc   ccbb
The series is ccbb/ccbb/ccbb/ccbb/ccbb.
Thus, the pattern ccbb is repeated.
Choose the alternative that will complete the series.
Q. cccbb – aa – cc – bbbaa – c
The series is ccc bbb aaa/ccc bbb aaa/c.
Thus, the pattern cccbbbaaa is repeated.
Choose the alternative that will complete the series.
Q. 3, 7, 15, 39, 63, 127, 255, 511
Each number in the series is multiplied by 2 and the result is increased by 1 to obtain the next number.
∴ 39 is wrong, the correct term being 31.
Choose the alternative that will complete the series.
Q. 6, 12, 48, 100, 384, 768, 3072
Each term at even place in the series, except 100, is obtained by multiplying the preceding term by 2.
∴ 100 is wrong, the correct term is 96.
Choose the alternative that will complete the series.
Q. 1, 5, 11, 19, 29, …?….
The sequence is +4, +6, +8, +10, ……..
∴ Missing number = 29 + 12 = 41
Choose the alternative that will complete the series.
Q. 4, 9, 5, 12, 7, 15, 8, ..?…, 10
The given sequence is a combination of two series: 4, 5, 7, 8, 10 and 9, 12, 15, …... Clearly, the missing term is 18.
Choose the alternative that will complete the series.
Q. 2, 5, 9, 19, 37, ..?….
The second number is one more than twice the first; third number is one less than twice the second, fourth number one more than twice the third; fifth number is one less than twice the fourth.
Thus, the sixth number is one more than twice the fifth. So, the missing number is 75.
Choose the alternative that will complete the series.
Q. 2, 9, 28, 65, 126, ..?….
The sequence is 1^{3} + 1, 2^{3} + 1, 3^{3} + 1, 4^{3} + 1, 5^{3} + 1, …….
∴ Missing number = (6^{3} + 1) = 216 + 1 = 217
Choose the alternative that will complete the series.
Q.1/81, 1/54, 1/36, 1/24, ..?…
Each term of the series is multiplied by 3/2 to obtain the next term.
∴ Missing term = 1/24 × 3/2 = 1/16
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