(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)
13 - 26 - 30 - 60 ; 9 - 18 - 22 - 44
The problem presents two number sequences where a specific mathematical operation connects consecutive numbers. We need to identify this pattern.
Set 1: 13 - 26 - 30 - 60
The pattern identified is \(\times 2\), \(+ 4\), \(\times 2\).
Set 2: 9 - 18 - 22 - 44
The pattern \(\times 2\), \(+ 4\), \(\times 2\) is consistent across both sets.
We will now check which option follows the identified pattern (\(\times 2\), \(+ 4\), \(\times 2\)):
Option 1: 10 - 20 - 24 - 54
Option 2: 2 - 4 - 8 - 12
Option 3: 3 - 6 - 10 - 22
Option 4: 6 - 12 - 16 - 32
Option 4 (6 - 12 - 16 - 32) is the only sequence that follows the mathematical operations \(\times 2\), \(+ 4\), \(\times 2\) derived from the given sets.
Find the missing number in the given series. -2.7, -2.1, -1.5, -0.9, -0.3, ?
Refer to the given number and symbol series and answer the question that follows. Counting to be done from left to right only.
(Left) 2 & % 4 6 @ & 3 Ω 9 # 1 * 8 £ 6 1 7 # (Right)
How many such symbols are there, each of which is immediately preceded by an even number and also immediately followed by an even number?
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, ?