Find the missing letters/numbers.
B - 3, D - 6, F - 9, H - 12, ___

Options

A. L - 14
B. M - 13
C. J - 15
D. I - 9

Answer

To find the missing letters and numbers in the series B - 3, D - 6, F - 9, H - 12, we will analyze the patterns in both the letters and the numbers.

### Step 1: Analyze the Numbers
The numbers in the series are: 3, 6, 9, 12.

- The difference between consecutive numbers:
- 6 - 3 = 3
- 9 - 6 = 3
- 12 - 9 = 3

We can see that each number increases by 3.

To find the next number:
- 12 + 3 = 15

### Step 2: Analyze the Letters
The letters in the series are: B, D, F, H.

- The position of the letters in the alphabet:
- B is the 2nd letter
- D is the 4th letter
- F is the 6th letter
- H is the 8th letter

The difference between the positions of consecutive letters:
- D (4) - B (2) = 2
- F (6) - D (4) = 2
- H (8) - F (6) = 2

We can see that each letter increases by 2 positions in the alphabet.

To find the next letter:
- H (8) + 2 = 10, which corresponds to the letter J.

### Final Answer
Combining both results, the missing entry is:
**J - 15**