RE: Puzzle Contest #12 - First to get all the correct answers wins 5 SBD, all attempts will receive an upvote.

[banum]

A (1a) = (23), (1b) = (7), (1c) = (18)
A (2a) = (24), (2b) = (54), (2c) = (9)
A (3) = e.(Mary)
A (4a) = (-5), (4b) = (4) excellent contest