Below are given two sets of numbers. In each set of numbers, a certain mathematical operation on the first number results in the second number. Similarly, certain mathematical operation on the second number results in the third number and so on. Which of the given options follows the same set of operations as in the given sets? (NOTE – A two/three-digit number cannot be broken into individual digits for operations; e.g. if 37 is followed by 10, the operation cannot be 3+7 as a two-digit number cannot be broken into individual digits.) 19 - 53 - 97 - 121 27 - 61 - 105 - 129
35 - 69 - 113 - 137
Find the differences between consecutive terms in each given set.
19-53-97-121: differences +34, +44, +24.
27-61-105-129: differences +34, +44, +24. Same pattern.
Check each option's differences against (+34, +44, +24):
49-83-117-151: (+34, +34, +34). Fails.
67-121-155-179: (+54, +34, +24). Fails.
35-69-113-137: (+34, +44, +24). Matches.
58-92-116-130: (+34, +24, +14). Fails.
Hence, the answer is 35 - 69 - 113 - 137.
What should come in place of the question mark (?) in the given series?
4 9 14 19 24 ?
Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete?
FEA 40 EDZ 32 DCY 24 CBX 16 ?
What should come in place of the question mark (?) in the given series based on the English alphabetical order?
DEL GFJ JGH MHF ?
What should come in place of the question mark (?) in the given series?
6, 10, 18, 30, 46, ?
What should come in place of the question mark (?) in the given series?
170 150 133 119 108 ?
What should come in place of the question mark (?) in the given series?
40 47 55 64 74 ?
What should come in place of the question mark (?) in the given series?
2 3 ? 38 102 227
What should come in place of the question mark (?) in the given series?
18 24 12 30 ? 36
What should come in place of the question mark (?) in the given series? 97, 80, 65, 52, 41, ?
What should come in place of the question mark (?) in the given series?
64 82 100 118 136 154 ?
Choose the option which completes the given figure series.

Select the correct option that will fill in the blank and complete the series.
18, 36, 108, 432, 2160, .............Select the correct option that will fill in the blank and complete the series.
52, 56, 65, 81, 106, ?Select the correct option that will fill in the blank and complete the series. 21, 43, 85, 171, 341, .......
Select the correct option that will fill in the blank and complete the series.
3, 5, 7, 9, 11, ?
2, 2, 2, 2, 2, ?