Select the set of letters that, when sequentially placed in the blanks of the given letter series, will complete the letter series.
D _ K _ D _ K X _ U K _
- AU X U D X
- BU X K X D
- CU X U D D
- DX K U D X
Solution & Step-by-step Explanation
Let's analyze the structure of the series, which has 12 elements. Let's try splitting it into groups of 4:
D _ K _∣D _ K X∣_ U K _
By comparing group 1 and group 2:
The last letter of group 2 is 'X'. So the last letter of group 1 should also be 'X'.
The second letter of group 3 is 'U'. So the second letter of group 1 and group 2 should be 'U'.
Let's fill them into the pattern:
Group 1: D [U] K [X]
Group 2: D [U] K X
Group 3: [D] U K [X]
The repeated pattern block is DUKX.
Let's assemble the missing blank letters in order: U, X, U, D, X.
This corresponds perfectly to Option A.
D _ K _∣D _ K X∣_ U K _
By comparing group 1 and group 2:
The last letter of group 2 is 'X'. So the last letter of group 1 should also be 'X'.
The second letter of group 3 is 'U'. So the second letter of group 1 and group 2 should be 'U'.
Let's fill them into the pattern:
Group 1: D [U] K [X]
Group 2: D [U] K X
Group 3: [D] U K [X]
The repeated pattern block is DUKX.
Let's assemble the missing blank letters in order: U, X, U, D, X.
This corresponds perfectly to Option A.