Question : Directions: Find out the correct alternative that when filled in the blanks in the same sequence will make the series logically complete.
CN_FF_ZE ILC_ _KFC OJI_

Option 1: VNDLA

Option 2: XNDKB

Option 3: XMCLA

Option 4: WMDLB

Correct Answer: WMDLB

Solution : Given:
CN_FF_ZE ILC_ _KFC OJI_

To fill the series we have to divide the series – CN_F / F_ZE / ILC_ / _KFC / OJI_
Let's check each option –
First option: VNDLA ; CN V F / F N ZE / ILC D / L KFC / OJI A (No repeated pattern has been found.)
Second option: XNDKB ; CN X F / F N ZE / ILC D / K KFC / OJI B (No repeated pattern has been found.)
Third option: XMCLA ; CN X F / F M ZE / ILC C / L KFC / OJI A (No repeated pattern has been found.)
Fourth option: WMDLB ; CN W F / F M ZE / ILC D / L KFC / OJI B (In each part, add 3 to the place value of the first letter, subtract 1 from the place value of the second letter, add 3 to the place value of the third letter and subtract 1 from the place value of the fourth letter.)
First letter of the series→C + 3 = F; F + 3 = I; I + 3 = L; L + 3 = O
Second letter of the series→N – 1 = M; M – 1 = L; L – 1 = K; K – 1 = J
Third letter of the series→W + 3 = Z; Z + 3 = C; C + 3 = F; F + 3 = I
Fourth letter of the series→F – 1 = E; E – 1 = D; D – 1 = C; C – 1 = B

So, the series becomes CNWFFMZEILCDLKFCOJIB . Hence, the fourth option is correct.