The following corrections have been provided (and are posted in the Q&P monthly round-up) but nobody seems to have queried Q31 as far as I can see. (I've not got the quiz myself but, apparently, an early draft version of the first two pages accidentally got included with the published version of the quiz).
Q27 - should be 3,7,2,3,5
Q30 - should be 5,6
Q34 - should be 7,2,4
Q51 - answer sheet is 3,8 but he thinks it should be 3,5,3 but they are checking the correct spelling of the title
Q75 - should be 4,2,2,2,5
Q80 - should be 10