View All num of num See all Photos University of Toronto www.utoronto.ca Engaged Employer Overview Reviews Salaries Interviews Jobs Photos Benefits 411 Reviews 2.9k Salaries 64 Interviews Follow Add Interview Follow Add Interview Interview Question Investment Banking Internship Interview Toronto, ON (Canada) University of Toronto 9 balls in total and an old fashion scale. 1 of the 9 weighs more than the other. how do u find out which is the off ball Tags: See more , See less 8 Answer Add Tags Answer Interview Answer 2 Answers ▲ 1 ▼ weigh them out 3 x 3 Interview Candidate on Mar 5, 2012 ▲ 0 ▼ Weigh 3 balls, then weigh 3 more. If the 2 weightings are identical then the lighter ball has not yet been weighed, so replace one ball until you find it. If one of the weightings is lighter, go back to that configuration and remove one ball at a time until you see an inconsistent drop in weight. Joseph on Nov 22, 2013 Interviews > Investment Banking Internship > University of Toronto Add Answers or Comments To comment on this, Sign In or Sign Up.