Select the combination of letters that, when placed in the blanks of the given letter series in order, will complete the series.
a _ _ c c _ a a b c _ d _ _ b c c _ a _ _ c c d
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → abdcaadab
In a letter series with blanks, look for a block of letters that repeats; the blanks are then the letters the block needs at those places. The 24 places split into four blocks of six, each a a b c c d.
Block 1: a _ _ c c _ needs a, b, d
Block 2: a a b c _ d needs c
Block 3: _ _ b c c _ needs a, a, d
Block 4: a _ _ c c d needs a, b
The series is aabccd aabccd aabccd aabccd, and the blanks in order are abdcaadab.