Which sequence can be generated from the formula f(x + 1) = 1/(x))?
X, 2x, 4x, 8x,
X, 2x, 4x, 6x

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