Question

Select the letter-cluster from among the given options that can replace the question mark (?) in the following series. BRF, EUH, HXJ, KAL, ?

• A. NMB
• B. NKH
• C. NHG
• D. NDN

Answer 1

Answer:

D. NDN

Another quick way to solve this is by looking at the numerical positions of the letters in the English alphabet (A=1, B=2, ..., Z=26).

## 1. Convert the Series to Numbers

Let's write down the position of each letter in the grid:

* B R F → [2, 18, 6]

* E U H → [5, 21, 8]

* H X J → [8, 24, 10]

* K A L → [11, 1, 12] (Note: 24 + 3 = 27, which wraps around to 1)

## 2. Spot the Pattern Columns

Now, look at the math for each vertical column:

* First column: 2, 5, 8, 11 (+3 each time)

* Second column: 18, 21, 24, 1 (+3 each time)

* Third column: 6, 8, 10, 12 (+2 each time)

## 3. Calculate the Next Numbers

Apply the same math to the last set:

* First number: 11 + 3 = 14

* Second number: 1 + 3 = 4

* Third number: 12 + 2 = 14

## 4. Convert Numbers Back to Letters

* 14th letter = N

* 4th letter = D

* 14th letter = N

This gives you the identical result: NDN.