Question

The blood groups of 200 people are as follows: A – 50 people; B – 65 people; O – 70 people; AB – 15 people. If a person from this group is selected at random, what is the probability that this person has 'A' or 'AB'

Answer 1

Step-by-step explanation:

for a

$\frac{50}{200} = 0.25 \: for \: a \\ \frac{65}{200} = 0.325 \: for \: b\\ \frac{70}{200} = 0.35 \: for \: o \\ \frac{15}{200} = 0.075 \: for \:ab$

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