You can make p=0.15 for "does not have" the Rh factor and find for n=6, is the 'five' a typo?
Among persons donating blood to a clinic, 85% have blood (that is, the Rhesus factor is present in their blood). Six people donate blood at the clinic on a particular day.
Find the probability that at least one of the five does not have the Rh factor (confused on how this is worded).
Plus, there are 6 people donating per day not 5.