Which of the four options will replace the question mark (?) in the following series?
XF 11, YI 15, ZL 19, AO 23, ?
BR 27
Solution to the Series
Given Series: XF 11, YI 15, ZL 19, AO 23, ?
Step 1: Analyze the Letters
First Letter:
The first letters in the series are:
- X (24th letter)
- Y (25th letter)
- Z (26th letter)
- A (1st letter)
The letters move forward alphabetically. The next letter after A is: B.
Second Letter:
The second letters in the series are:
- F (6th letter)
- I (9th letter)
- L (12th letter)
- O (15th letter)
The second letters increase by skipping 2 letters each time. The next letter after O is: R (18th letter).
Step 2: Analyze the Numbers
The numbers in the series are:
- 11
- 15
- 19
- 23
The numbers increase by 4 each time. The next number is: 27.
Conclusion
The next term in the series is: BR 27
Similar Questions
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Important Questions from Sequence & Series
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Which of the following options should come in place of the question mark (?) in the given series based on the English alphabetical order?
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Two sets of numbers are given below. In each set of numbers, certain mathematical operation(s) on the first number result(s) in the second number. Similarly, certain mathematical operation(s) on the second number result(s) in the third number and so on. Which of the given options follows the same set of operations as in the given sets? (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into their constituent digits. E.g. 13 – Operations on 13 such as adding/subtracting/multiplying to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed.)
What should come in place of the question mark (?) in the given series based on the English alphabetical order?
TAW VCY XEA ZGC ?Refer to the following number and symbol series and answer the question that follows.
Counting to be done from left to right only.
(Left) % 9 % 2 7 5 & $ * 5 © 6 1 1 * € 4 # 1 7 3 @ (Right)
How many such symbols are there each of which is immediately preceded by a number and also immediately followed by a symbol?
