Barclays Exotics Trading Intern interview questions

Had two phone interviews, i've been asked about rates and index levels, questions to assess my knowledge of barcap, correlation behavior of certains products (Worst of, Best of, asian call and put), define smile and skew, smile impact on auto call and digital, and several classic brainteasers : hat colors, number of small cubes in the outer layer of a 10x10x10 cube. What do you think of barcap's strategy for the years to come? What do you think of the impact of oil price on the economy