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A, B, B, D, C, F, D; H, E, ?, ?

Question: A, B, B, D, C, F, D; H, E, ?, ?
[A].

E, F

[B].

F, G

[C].

F, I

[D].

J, F

Answer: Option D

Explanation:

The given sequence is a combination of two series :

I. 1st, 3rd, 5th, 7th, 9th, 11th terms i.e. A, B, C, D, E, ? II. 2nd, 4th, 6th, 8th, 10th terms i.e. B, D, F, H, ?

Clearly, I consists of consecutive letters while II consists of alternate letters. So, the missing letter in I is F, while that in II is J. So, the missing terms i.e. 10th and 11th terms are J and F respectively.