Select the pair which follows the same pattern as that followed by the two set of pairs given below. Both pairs follow the same pattern.
IIO : JDK
NGR : OBN

The correct option is ORL : PMH.

Let's analyze the pattern followed by the given pairs of letter combinations by examining the positional values of letters in the English alphabet.

First Pair: IIO : JDK

Looking at each letter position:
1st letter: I (9) to J (10) ⇒ +1
2nd letter: I (9) to D (4) ⇒ -5
3rd letter: O (15) to K (11) ⇒ -4

Second Pair: NGR : OBN

Looking at each letter position:
1st letter: N (14) to O (15) ⇒ +1
2nd letter: G (7) to B (2) ⇒ -5
3rd letter: R (18) to N (14) ⇒ -4

The pattern applied to each 3-letter group is:
First letter: +1
Second letter: -5
Third letter: -4

Now, let's test the given options using this exact pattern:

Option 3: ORL : PMH
1st letter: O (15) + 1 = 16 (P)
2nd letter: R (18) - 5 = 13 (M)
3rd letter: L (12) - 4 = 8 (H)
This results in PMH, which matches the second term of Option 3.

Thus, ORL : PMH follows the exact same pattern.