(a) In an examination a candidate must select 2 questions from the 5 questions in section A and 4 questions from the 8 questions in section B. Find the number of ways in which this selection can be made.

(b) The 7 digits of the number 6378129 are arranged to give a different 7-digit number. Find the number of different 7-digit numbers that can be made in which the number is even.