The probability is ##0.36## or ##36%##

The probability that one chosen person is off blood type ##A## is ##40%=0.4## so the probability that he is not of blood type ##A## is ##0.6##. To calculate the probability that none of ##2## people is of blood type ##A## you have to multiply the probabilities:

##0.6xx0.6=0.36## or ##36%##.

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