help me please

[minseok]

Hi,
I met a problem (Secondary Selection Portfolio Pack2 paper 6) which is difficult to understand the answer.
The question is:

AE is to IO as BC is to (?)

The answer in the answer sheet says DF.

Anyone can explain how it works.
Thanks.

[DC17C]

AE (both vowels) to IO ( next in series of vowels) AEIOU
BC ( consonants) DF ( next in series of consonants)BCDFGH

well that was my thought anyway

[Looking for help]

I agree....A is to the next vowel after E as its been used, therefore I, and E is therefore to O, hence B is to the next consonant that hasn't been used, D, and C is to F

[Reading Mum]

that is a nasty one

[DC17C]

I think it is sneaky as it does not follow the more typical rules for this type but I guess you would either see the pattern or not and I guess that is what VR is supposed to be about.

[Manny0311]

Do these come up in Bucks VR ?????

[Orson]

Manny0311
Yes, they do!

One would normally expect:
AE to IO
BC to JM

(A to I is +8 so B +8 is J
and E to O is +10 so C +10 is M)

Well, that's how I see it.