64.
because every letter is replaced with the number of the position in the alphaeth, and then doubled.
A=1 x2=
B=2 x2=
D=4 x2=
H=8 x2=
P=16 x2=
16 x2=
32 x2=
64
The answer is G. The letter separation increases by one each turn. A-B is one space apart, B-D is two spaces apart, D-G is three spaces apart, G-K is four spaces apart, and K-P is five spaces apart.
212 Degrees (Fahrenheit) at the Boiling Point
32 pieces on a chess board
Ph.D stands for: Doctor of Philosophy