Select the option that represents the letters that, when sequentially placed from left to right in the blanks below, will complete the letter series. R _ _ ODRMN _ _ _ MN _ DR _ NO _
MNODROMD
Analyzing the Letter Series Pattern
The question asks us to find the sequence of letters from the options that will complete the given letter series. The series is R _ _ ODRMN _ _ _ MN _ DR _ NO _.
First, let's count the characters in the given series, including the blanks represented by underscores:
R (1) + _ (1) + _ (1) + O (1) + D (1) + R (1) + M (1) + N (1) + _ (1) + _ (1) + _ (1) + M (1) + N (1) + _ (1) + D (1) + R (1) + _ (1) + N (1) + O (1) + _ (1)
Total characters = 20. The number of blanks is 8.
Since we need to fill the 8 blanks, and the options provide 8 letters, the completed series will also have 20 characters.
Let's test the first option: MNODROMD. We will place these letters sequentially into the 8 blanks from left to right.
Original series with blanks numbered:
R 1_ 2_ O D R M N 3_ 4_ 5_ M N 6_ D R 7_ N O 8_
Inserting the letters MNODROMD into blanks 1 through 8:
- Blank 1 gets M
- Blank 2 gets N
- Blank 3 gets O
- Blank 4 gets D
- Blank 5 gets R
- Blank 6 gets O
- Blank 7 gets M
- Blank 8 gets D
The completed series becomes:
R M N O D R M N O D R M N O D R M N O D
Let's write out the full resulting series: RMNODRMNODRMNODRMNOD
Now, let's examine this completed series to find a pattern.
R M N O D R M N O D R M N O D R M N O D
We can see a repeating block of letters: 'RMNOD'.
- The first 5 letters are RMNOD.
- The next 5 letters are RMNOD.
- The next 5 letters are RMNOD.
- The last 5 letters are RMNOD.
The entire 20-character series is a perfect repetition of the 5-letter block 'RMNOD' four times (RMNOD x 4).
Let's verify that the letters from Option 1 (MNODROMD) are indeed the letters that fill the blanks in the original series to create this repeating pattern. Comparing the original series with the filled series (RMNODRMNODRMNODRMNOD):
Original: R _ _ O D R M N _ _ _ M N _ D R _ N O _
Filled: R M N O D R M N O D R M N O D R M N O D
The letters filling the blanks are at positions 2, 3, 9, 10, 11, 14, 17, and 20 in the 20-character filled series:
| Blank Position in Original Series | Position in 20-char Series | Letter in Filled Series |
|---|---|---|
| 1st Blank (Pos 2) | 2 | M |
| 2nd Blank (Pos 3) | 3 | N |
| 3rd Blank (Pos 9) | 9 | O |
| 4th Blank (Pos 10) | 10 | D |
| 5th Blank (Pos 11) | 11 | R |
| 6th Blank (Pos 14) | 14 | O |
| 7th Blank (Pos 17) | 17 | M |
| 8th Blank (Pos 20) | 20 | D |
The sequence of letters filling the blanks is M, N, O, D, R, O, M, D, which is exactly Option 1 (MNODROMD).
Therefore, placing the letters MNODROMD sequentially into the blanks completes the letter series with a clear repeating pattern.
Revision Table: Solving Letter Series
| Step | Description |
|---|---|
| 1 | Count the total number of characters and blanks in the given series. |
| 2 | Note the number of letters provided in each option (should match the number of blanks). |
| 3 | Substitute the letters from an option (starting with the first option) into the blanks sequentially. |
| 4 | Examine the resulting complete series for a repeating pattern or logical sequence. |
| 5 | If a clear pattern is found (like a repeating block), verify that the inserted letters are indeed from the tested option. |
| 6 | If the pattern is consistent and the letters match the option, that option is likely correct. Otherwise, test other options. |
Additional Information on Letter Series Reasoning
Letter series questions are common in logical reasoning sections of various tests. They require you to identify the rule or pattern governing the sequence of letters.
Common types of letter series patterns include:
- Alphabetical order: Letters follow the standard sequence (A, B, C...). The pattern might involve skipping letters (A, C, E...).
- Positional value: The pattern is based on the position of letters in the alphabet (A=1, B=2, ...). Operations (+, -, *, /) on these values might form the pattern.
- Repeating block: A specific sequence of letters repeats itself throughout the series, as seen in this problem (e.g., RMNODRMNOD...).
- Skipping letters: Letters are skipped in a particular order (e.g., skipping one letter, then two, then one, etc.).
- Reverse order: Letters follow the alphabetical sequence in reverse.
- Combination of rules: More complex series might combine two or more of the above patterns.
To solve letter series problems effectively:
- Look for immediate repetitions or familiar sequences.
- Note the position of each letter in the alphabet.
- Examine the gaps between letters.
- Break down the series into smaller segments or blocks.
- Test potential patterns systematically.
Practicing various types of series helps improve pattern recognition skills, which is crucial for solving these problems quickly and accurately.
Important Questions from General Series of Alphabets
Each vowel in the word "FOREFOOT" is changed to the following letter in the English alphabetical series and each consonant is changed to the previous letter in the English alphabetical series. In the newly formed word, how many alphabets are there in the English alphabetical series between the alphabet which is 2nd from the left and 1st from the right?
If the letters in the word ‘UNIVERSAL’ are arranged in the alphabetic order and each letter in the order is assigned a numerical value of 1, 2, 3 …. according to their position from the left, then the sum of the numerical values of the position of the consonants will be:
In the given sequence, if every letter from the 8 th position from the left side is replaced by its next letter in the English alphabet series, then how many Vs will be there in the resulting sequence?
ZUDJKNCXVCSLLIEBSFJVATWQK
If the letters in the word BACKFIELED are arranged as in the English alphabetical order, then which letter will be to the second right of the letter ‘F’, after the rearrangement?
How many L's are there in the following series, that is preceded by an R and followed by a T?
Z Q S T L R M N Q N R T U V X R L T A L T Q L T
