human blood has A antigen,B antigen, both A and B or
neither antigens.rh antigen may or may not be there.blood
iis a +ve if a and rh antigens r there but not b antigen.a
person having a and b antigen has AB -ve blood.having only
rh antigen gives O +ve blood the other blood groups r
defined in the same manner.in a hospital the following
records were noted 25 had A antigen,17 had A and b ,27 had
b ,22 had b and RH,30 had RH,12 had none of the antigens,16
had A and Rh antigens and 15 had all the 3 antigens.how
many patients
a)were surveyed?
b)had exactly 1 antigen?
c) had exactly 2 antigens?
d) had O +ve blood?
e) had AB -ve blood?
f) had A-positive blood?


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