For the following questions answer them individually
What comes next in the series? AF BH DJ ?? KN
If in the English alphabet, all letters at odd numbered positions are written in serial order from left to right followed by the letters at even numbered positions written in reverse order, which letter will be sixth to the left of seventeenth letter from left ?
Which of the following combinations comes in place of the question mark?
PTQ UYV CGD ? EIF
Which letter comes next in the series based on the English alphabetical order? a c f j o u b j ?