Anna, Laura and David each earn the same monthly salary. Each month Anna saves 19% of her salary and spends the rest of it Laura spends 17/20 of her salary and saves the rest of it Amount of salary David saves ; amount of salary he spends = 2:8 Work out who saves the most of their salary each month

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