Select the combination of letters that, when placed in the blanks of the given letter series in order, will complete the series.
c _ a c _ c _ a c _ c _ a c c
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → bcbcb
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 15 places split into three blocks of five, each c b a c c.
Block 1: c _ a c _ needs b, c
Block 2: c _ a c _ needs b, c
Block 3: c _ a c c needs b
The series is cbacc cbacc cbacc, and the blanks in order are bcbcb.