Question

Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? KM37 IK48 GI59 EG70 ?

• A. CF81
• B. CE82
• C. CE81
• D. CF82

Answer 1

Answer:

C. CE81

The letter-number cluster that will replace the question mark is CE81.

1. The First Letter Pattern

Look at the first letter of each cluster: K → I → G → E → ?

• K (11) − 2 = I (9)

• I (9) − 2 = G (7)

• G (7) − 2 = E (5)

• E (5) − 2 = C (3)

2. The Second Letter Pattern

Look at the second letter of each cluster: M → K → I → G → ?

• M (13) − 2 = K (11)

• K (11) − 2 = I (9)

• I (9) − 2 = G (7)

• G (7) − 2 = E (5)

3. The Number Pattern

Look at the numbers at the end of each cluster: 37 → 48 → 59 → 70 → ?

• 37 + 11 = 48

• 48 + 11 = 59

• 59 + 11 = 70

• 70 + 11 = 81

Combining these three patterns gives CE81.