Which set of letters, when placed in order in the blanks of the given letter series, completes it?
X Y Z _ _ Y _ Z _ X _ X
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → XXYZX
The given letters show groups of X’s, Y’s and Z’s in which each letter is written one more time in every new group: XYZ, then XXYYZZ, then XXXYYYZZZ, of which the series shows the start.
Group 1: XYZ, no blank here
Group 2: XXYYZZ, so the blanks here are X, X, Y, Z
Group 3: XXX, so the blank here is X
The blanks, in order, are therefore X, X, Y, Z, X.