Complete the following Series:
WE, SG, PJ, LN, IS, ?

Options

A. FZ
B. FX
C. EY
D. EX

Answer

To complete the series: WE, SG, PJ, LN, IS, ?, we need to identify the pattern in the sequence of letters.

1. **Identify the First Letters:**
- The first letters of each pair are: W, S, P, L, I.
- The positions of these letters in the alphabet are:
- W = 23
- S = 19
- P = 16
- L = 12
- I = 9

2. **Determine the Pattern:**
- The first letters are decreasing by 4:
- W (23) to S (19) = -4
- S (19) to P (16) = -3
- P (16) to L (12) = -4
- L (12) to I (9) = -3
- The pattern alternates between subtracting 4 and subtracting 3.

3. **Find the Next First Letter:**
- Following the pattern, the next letter should be:
- I (9) - 4 = 5, which corresponds to the letter E.

4. **Identify the Second Letters:**
- The second letters of each pair are: E, G, J, N, S.
- The positions of these letters in the alphabet are:
- E = 5
- G = 7
- J = 10
- N = 14
- S = 19

5. **Determine the Pattern:**
- The second letters are increasing:
- E (5) to G (7) = +2
- G (7) to J (10) = +3
- J (10) to N (14) = +4
- N (14) to S (19) = +5
- The pattern is increasing by 2, then 3, then 4, then 5.

6. **Find the Next Second Letter:**
- Following the pattern, the next letter should be:
- S (19) + 6 = 25, which corresponds to the letter Y.

7. **Combine the Results:**
- The next pair in the series is: EY.

Thus, the completed series is: WE, SG, PJ, LN, IS, **EY**.