a community hall is in a shape of a cuboid. the hall is 40 m long 15 m wide and 3 m high. the community halls needs re-decorating with new paints for the wall and ceiling and new tiles on the floor. a 10litre tin of paint covers 25 m^2 and cost £10. 1m^2 floor tiles cost £3 each.

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