Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.
S O _ _ T A S _ _ A T A _ _ N A T _ _ O N A _ _

Question

Select the combination of letters that when sequentially placed in the blanks of the given series will complete the series.S O _ _ T A S _ _ A T A _ _ N A T _ _ O N A _ _

Prepp Team · Accepted Answer

Understanding Letter Series and Finding the Pattern

Letter series questions require identifying a specific pattern or rule followed by the sequence of letters. This pattern can involve repetition of a block of letters, skipping letters in alphabetical order, or other logical sequences. To complete the series, we need to find the missing letters that fit this established pattern.

The given letter series is: S O _ _ T A S _ _ A T A _ _ N A T _ _ O N A _ _

There are 10 blanks in the series, and the options provide sequences of 10 letters to fill these blanks.

Step-by-Step Analysis

A common method for solving such series is to test the given options by placing their letters into the blanks. If an option completes the series into a discernible pattern, it is likely the correct answer.

Let's examine the structure of the series and try inserting the letters from one of the options. We will use the letters from the sequence NAONSOASTA, as it is given as the correct completion sequence.

The blanks are at positions 3, 4, 8, 9, 14, 15, 20, 21, 26, and 27 in the original series.

Original series with blanks indicated:

S O (1) (2) T A S (3) (4) A T A (5) (6) N A T (7) (8) O N A (9) (10)

Let's place the letters from the sequence NAONSOASTA into the blanks:

1st blank (position 3): N
2nd blank (position 4): A
3rd blank (position 8): O
4th blank (position 9): N
5th blank (position 14): S
6th blank (position 15): O
7th blank (position 20): A
8th blank (position 21): S
9th blank (position 26): T
10th blank (position 27): A

Substituting these letters into the blanks gives us the complete series:

S O N A T A S O N A T A S O N A T A S O N A T A

Identifying the Repeating Pattern

Let's look at the completed series: SONATASOANATASOANATASONATA

Let's try dividing this series into smaller blocks to see if a pattern emerges. If we divide the series into blocks of 6 letters, we get:

S O N A T A | S O N A T A | S O N A T A | S O N A T A

It is clear that the block "SONATA" is repeating four times consecutively to form the complete series.

Let's verify if filling the blanks with the sequence NAONSOASTA correctly forms this repeating "SONATA" pattern:

Original series: S O _ _ T A S _ _ A T A _ _ N A T _ _ O N A _ _

Expected pattern: SONATA SONATA SONATA SONATA

Comparing the blanks with the expected pattern:

Blank at pos 3: Should be N (Matches NAONSOASTA)
Blank at pos 4: Should be A (Matches NAONSOASTA)
Blank at pos 8: Should be O (Matches NAONSOASTA)
Blank at pos 9: Should be N (Matches NAONSOASTA)
Blank at pos 14: Should be S (Matches NAONSOASTA)
Blank at pos 15: Should be O (Matches NAONSOASTA)
Blank at pos 20: Should be A (Matches NAONSOASTA)
Blank at pos 21: Should be S (Matches NAONSOASTA)
Blank at pos 26: Should be T (Matches NAONSOASTA)
Blank at pos 27: Should be A (Matches NAONSOASTA)

All the letters from the sequence NAONSOASTA fit perfectly into the blanks to create the repeating pattern "SONATA". Therefore, NAONSOASTA is the correct sequence to complete the series.

Final Answer Derivation

By inserting the letters from the sequence NAONSOASTA into the blanks of the given series, we obtain the series SONATASONATASONATASONATA, which consists of the block "SONATA" repeated four times. This confirms that the sequence NAONSOASTA correctly completes the pattern.

Blank Position	Letter to Insert	Source (NAONSOASTA)	Resulting Series Segment	Pattern Check
3	N	1st letter	SON	SONATA
4	A	2nd letter	SONA	SONATA
8	O	3rd letter	TASO	...TASO... (part of SONATA)
9	N	4th letter	TASON	...SON... (part of SONATA)
14	S	5th letter	ATAS	...ATAS... (part of SONATA)
15	O	6th letter	ATASO	...TASO... (part of SONATA)
20	A	7th letter	NATA	...NATA... (part of SONATA)
21	S	8th letter	NATAS	...ATAS... (part of SONATA)
26	T	9th letter	ONAT	...ONAT... (part of SONATA)
27	A	10th letter	ONATA	...ONATA (part of SONATA)

The completed series with NAONSOASTA inserted is SONATASONATASONATASONATA, which clearly shows the repeating block SONATA.

Revision Table: Letter Series Completion

Concept	Description	Key Strategy
Letter Series	A sequence of letters following a specific pattern or rule.	Identify the underlying pattern.
Pattern Types	Repeating blocks, alphabetical jumps, skipping letters, combined patterns.	Analyze differences between consecutive terms, look for repeating segments.
Solving Blanks	Fill in blanks with options to check for pattern completion.	Test options systematically, especially when a repeating block is suspected.

Additional Information: Solving Letter Series

Solving letter series problems effectively involves keen observation and pattern recognition. Here are some tips:

Count the total number of elements (letters + blanks). This can sometimes suggest the length of the repeating block (e.g., if total length is 20 and there are 4 blanks, the repeating block might be 4 or 5 letters long).
Look for repeating letters or groups of letters even in the incomplete series.
Try breaking the series into smaller parts, especially if you suspect a repeating block. Divide the total length by potential block lengths (e.g., 2, 3, 4, 5, 6, etc.).
Consider alphabetical positions of letters (A=1, B=2, etc.) if the pattern involves skipping letters or mathematical operations.
Test each option carefully by inserting the letters into the blanks in the correct order. The option that creates a consistent, logical pattern is the correct answer.