Time was definately a factor for me. I had 10 questions to go in the last 10 mins and 3 of those looked like I would not be able to solve them if I had 10 mins for each of them! So, I just made a guess
HUGE THANKS to the folks here at the RANCH for maintaining this site, it was a big help.
And of course, it would not have been possible without Kathy and Bert's book.