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The blood groups of 30 students of class...

The blood groups of 30 students of class VIII are recorded as follows :
A,B,O,O,AB,O,A,O,B,A,O,B,A,O,O,A,AB,O,A,A,O,O,AB,B,A,O,B,A,B,O.
Represent this data in the form of a frequency distribution table. Which is the most common, and which is the rarest, blood group among these students ?

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The blood group of 36 students of IX class are recorded as follows Represent the data in the form of frequency distribution table. Which is the most common and which is the rarest blood group among these students?

The blood groups of 30 students of class VIII are recorded as follows represent this data in the form of frequency distribution table. Find our which is the most common and which is the rerest blood group among these students.

What is correct for blood group O ?

Why is the blood group 'O' called as universal donor?

Blood group O is universal donor because

A child of blood group O cannot have parents of blood groups

Mention the genotype of the parents when their children are with A, B, AB, O blood groups.

Father's blood group is A and his son has 'O' group. Which of the blood group can not be present in mother?