www.itau.com.br / Siège social: Sao Paulo, BR
775 entretiens à São Paulo (sur 1 206)
www.banco.bradesco / Siège social: Osasco, BR
446 entretiens à São Paulo (sur 897)
What would you rather buy: one AAA $1000 bond or one hundred BBB $10 bonds?
Not sure if they're looking for a right answer here. I used probability distribution they gave for each rating notch and calculated two different probabilities: of losing the first dollar, and of losing everything. In the former case, AAA was better; in the latter the BBBs.