Open-ended - With worked solutions · SET 16 Question 94

Use the English alphabet A=1,…, Z=26, and vowels A, E, I, O, U. Suggest a value and explain a rule for each independent part.
a. Jack=1, Minnie=23; David=?
b. Ken=14, Bill=12; Liz=?
c. Roald=16, Annie=15; Nan=?
d. Graham=9, Felix=20; Basil=?
e. Ivan=46, Adam=19; Abdul=?