A professor packs her collection of 40 issues of a mathe- matics journal in four boxes with 10 issues per box. How many ways can she distribute the journals if a) each box is numbered, so that they are distinguish- able

As voters exit the polls, you ask a representative random sample of voters if they voted for a proposition. if the true percentage of voters who vote for the proposition is 63%, what is the probability that, in your sample, exactly 5 do not voted for the proposition before 2 voted for the proposition? the probability is