Find the next term of the following
letter series :
DEF, HIJ, MΜΝΟ, .........

Question

Find the next term of the following 
 letter series :
 DEF, HIJ, MΜΝΟ, .........

Accepted Answer

To determine the next term in the letter series DEF, HIJ, MΜΝΟ, we need to analyze the pattern in the sequence.

1. **Pattern Analysis:**
   - The first term is DEF.
   - The second term is HIJ.
   - The third term is MΜΝΟ.

Let's break down the pattern:
   - In the first term, the letters are D, E, and F, which are consecutive letters in the alphabet.
   - In the second term, the letters are H, I, and J, which are also consecutive letters in the alphabet.
   - In the third term, the letters are M, N, and O, again consecutive letters in the alphabet.

Observing the starting letters of each term:
   - The first term starts with D (4th letter of the alphabet).
   - The second term starts with H (8th letter of the alphabet).
   - The third term starts with M (13th letter of the alphabet).

The difference between the starting letters is:
   - H (8) - D (4) = 4
   - M (13) - H (8) = 5

The pattern in the differences is increasing by 1 each time (4, 5, ...).

2. **Predicting the Next Term:**
   - Following the pattern, the next difference should be 6.
   - Starting from M (13), the next starting letter should be 13 + 6 = 19, which corresponds to the letter S.

Therefore, the next term should start with S and include the next two consecutive letters, T and U.

3. **Conclusion:**
   - The next term in the series is STU.

4. **Explanation of Options:**
   - **Option 1: RTV** - This does not follow the pattern of consecutive letters starting from S.
   - **Option 2: STU** - This correctly follows the pattern of consecutive letters starting from S.
   - **Option 3: RST** - This does not follow the pattern of starting with S and having consecutive letters.
   - **Option 4: SRQ** - This does not follow the pattern of consecutive letters.

Thus, Option 2 (STU) is the correct answer as it logically follows the established pattern in the series.