1
Question
The blood groups of 20 students of Class IX are given below. Which is the rarest and most common blood group among these students?
AB
O
B
AB
A
B
B
B
O
A
A
AB
B
O
O
AB
O
AB
O
A
|
AB |
O |
B |
AB |
A |
B |
B |
B |
O |
A |
|
A |
AB |
B |
O |
O |
AB |
O |
AB |
O |
A |
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Solution
There are four blood groups.
A, O, B and AB
A - 4
B - 5
O - 6
AB - 5
On observing we get A is the rarest blood group and O is most common among these students.
A is the correct option.
There are four blood groups.
A, O, B and AB
A - 4
B - 5
O - 6
AB - 5
On observing we get A is the rarest blood group and O is most common among these students.
A is the correct option.
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