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Question

Choose the missing term out of the given alternatives.
A, B, B, D, C, F, D, H, E, ?, ?

A
E, F
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B
F, G
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C
F, I
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D
J, F
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Solution

The correct option is C J, F
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, series I consists of consecutive letters while series 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.

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